radiantearth · cholmes · Feb 26, 2020 · Feb 12, 2020 · Feb 12, 2020 · Feb 12, 2020
diff --git a/.circleci/config.yml b/.circleci/config.yml
@@ -3,17 +3,18 @@ jobs:
   build:
     working_directory: ~/stac
     docker:
-      - image: circleci/python:3.6.9
+      - image: circleci/python:3.7
 
     steps:
       - checkout
       - run: sudo chown -R circleci:circleci /usr/local/bin
-      - run: sudo chown -R circleci:circleci /usr/local/lib/python3.6/site-packages
+      - run: sudo chown -R circleci:circleci /usr/local/lib/python3.7/site-packages
       - run:
           name: install
           command: |
             pip install stac-validator
-            sudo apt-get install curl software-properties-common
+            sudo apt-get update
+            sudo apt-get install curl -y software-properties-common
             curl -sL https://deb.nodesource.com/setup_13.x | sudo -E bash -
             sudo apt-get install -y nodejs
             sudo npm install -g remark-cli remark-validate-links

diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -6,69 +6,45 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## Unreleased
 
-## [v0.9.0-rc2] - 2020-02-12
-
-### Added
-- [Basics](item-spec/common-metadata.md#basics) added to Common Metadata definitions with new `description` field for
-Item properties
-- New fields to the `link` object to facilitate [pagination support for POST requests](api-spec/api-spec.md#paging-extension)
-- Data role, as a suggestion for a common role for data files to be used in case data providers don't come up with their own names and semantics
-- Clarification text on HTTP verbs in STAC API
-- [View Geometry Extension](extensions/view/README.md)
-
-### Changed
-- Item `title` definition moved from core Item fields to [Common Metadata Basics](item-spec/common-metadata.md#basics) 
-fields. No change is required for STAC Items.
-- `putFeature` can return a `PreconditionFailed` to provide more explicit information when the resource has changed in the server
-- [Sort extension](api-spec/extensions/sort) now uses "+" and "-" prefixes for GET requests to denote sort order. 
-- Clarified how `/search` links must be added to `/` and changed that links to both GET and POST must be provided now that the method can be specified in links.
-- Moved angle definitions between extensions `view` and `sat`
-  - `sat:off_nadir_angle` -> `view:off_nadir`
-  - `sat:azimuth_angle` -> `view:azimuth`
-  - `sat:incidence_angle` -> `view:incidence_angle`
-  - `sat:sun_azimuth_angle` -> `view:sun_azimuth`
-  - `sat:sun_elevation_angle` -> `view:sun_elevation`
-
-
-### Removed
-- In API, removed any mention of using media type `multipart/form-data` and `x-www-form-urlencoded`
-
-### Fixed
-- Fixed Item JSON Schema now `allOf` optional Common Metadata properties are evaluated
-- Clarified usage of optional Common Metadata fields for STAC Items
-- Clarified usage of paging options, especially in relation to what OGC API - Features offers
-- Allow Commonmark in asset description, as it's allowed everywhere else
-- Put asset description in the API
-- Fixed API spec regarding license expressions
-- Added missing schema in the API Version extension
-
-## [v0.9.0-rc1] - 2020-01-06
+## [v0.9.0] - 2020-02-26
 
 ### Added
 - ItemCollection requires `stac_version` field, `stac_extensions` has also been added
 - A `description` field has been added to Item assets (also Asset definitions extension)
-- Field `mission` to [Common Metadata fields](item-spec/common-metadata.md).
+- Field `mission` to [Common Metadata fields](item-spec/common-metadata.md)
 - Extensions:
-    - [Version Indicators extension](extensions/version/README.md), adds `version` and `deprecated` fields to STAC Items and Collections
+    - [Version Indicators extension](extensions/version/README.md), new `version` and `deprecated` fields in STAC Items and Collections
     - Data Cube extension can be used in Collections, added new field `description`
-    - Added `description` and `roles` fields to the Asset in the [Asset Extension](extensions/asset/README.md)
-    - Projection Extension to describe Items with Assets that have an associated geospatial projection
+    - [Asset Extension](extensions/asset/README.md): new `description` and `roles` fields
+    - New [Projection Extension](extensions/projection/README.md) to describe Items with Assets that have an associated geospatial projection
+    - New [View Geometry Extension](extensions/view/README.md)
 - STAC API:
     - Added the [Item and Collection API Version extension](api-spec/extensions/version/README.md) to support versioning in the API specification
     - Run `npm run serve` or `npm run serve-ext` to quickly render development versions of the OpenAPI spec in the browser
+- [Basics](item-spec/common-metadata.md#basics) added to Common Metadata definitions with new `description` field for
+Item properties
+- New fields to the `link` object to facilitate [pagination support for POST requests](api-spec/api-spec.md#paging-extension)
+- `data` role, as a suggestion for a common role for data files to be used in case data providers don't come up with their own names and semantics
+- Clarification text on HTTP verbs in STAC API
 
 ### Changed
 - Support for [CommonMark 0.29 instead of CommonMark 0.28](https://spec.commonmark.org/0.29/changes.html)
 - Collection field `property` and the merge ability moved to a new extension 'Commons'
 - Added attribute `roles` to Item assets (also Asset definitions extension), to be used similarly to Link `rel`
 - Updated API yaml to clarify bbox filter should be implemented without brackets. Example: `bbox=160.6,-55.95,-170,-25.89`
-- Collection `summaries` merge array fields now.
+- Collection `summaries` merge array fields now
 - Several fields have been moved from extensions or item fields to the [Common Metadata fields](item-spec/common-metadata.md):
-    - `eo:platform` / `sar:platform` => `platform`
-    - `eo:instrument` / `sar:instrument` => `instruments`, also changed from string to array of strings
-    - `eo:constellation` / `sar:constellation` => `constellation`
-    - `dtr:start_datetime` => `start_datetime`
-    - `dtr:end_datetime` => `end_datetime`
+  - `eo:platform` / `sar:platform` => `platform`
+  - `eo:instrument` / `sar:instrument` => `instruments`, also changed from string to array of strings
+  - `eo:constellation` / `sar:constellation` => `constellation`
+  - `dtr:start_datetime` => `start_datetime`
+  - `dtr:end_datetime` => `end_datetime`
+- Moved angle definitions from extensions `eo` and new `view` extension
+  - `eo:off_nadir` -> `view:off_nadir`
+  - `eo:azimuth` -> `view:azimuth`
+  - `eo:incidence_angle` -> `view:incidence_angle`
+  - `eo:sun_azimuth` -> `view:sun_azimuth`
+  - `eo:sun_elevation` -> `view:sun_elevation`
 - Extensions:
     - Data Cube extension: Changed allowed formats (removed PROJ string, added PROJJSON / WKT2) for reference systems
     - [Checksum extension](extensions/checksum/README.md) is now using self-identifiable hashes ([Multihash](https://github.com/multiformats/multihash))
@@ -80,28 +56,43 @@ fields. No change is required for STAC Items.
     - Fields extension has a simplified format for GET parameters
     - `search` extension renamed to `context` extension. JSON object renamed from `search:metadata` to `context`
     - Removed "next" from the search metadata and query parameter, added POST body and headers to the links for paging support
-    - Query Extension - type restrictions on query predicates are more accurate, which may require additional implementation support.
+    - Query Extension - type restrictions on query predicates are more accurate, which may require additional implementation support
+- Item `title` definition moved from core Item fields to [Common Metadata Basics](item-spec/common-metadata.md#basics) 
+fields. No change is required for STAC Items.
+- `putFeature` can return a `PreconditionFailed` to provide more explicit information when the resource has changed in the server
+- [Sort extension](api-spec/extensions/sort) now uses "+" and "-" prefixes for GET requests to denote sort order. 
+- Clarified how `/search` links must be added to `/` and changed that links to both GET and POST must be provided now that the method can be specified in links
 
 ### Removed
 - `version` field in STAC Collections. Use [Version Extension](extensions/version/README.md) instead
 - `summaries` field from Catalogs. Use Collections instead
-- Asset Types (pre-defined values for the keys of individual assets, *not* media types) in Items. Use the asset's `roles` instead.
-- `license` field doesn't allow SPDX expressions any longer. Use `various` and links instead.
+- Asset Types (pre-defined values for the keys of individual assets, *not* media types) in Items. Use the asset's `roles` instead
+- `license` field doesn't allow SPDX expressions any longer. Use `various` and links instead
 - Extensions:
     - `eo:platform`, `eo:instrument`, `eo:constellation` from EO extension, and `sar:platform`, `sar:instrument`, `sar:constellation` from the [SAR extension](extensions/sar/README.md)
     - Removed from EO extension field `eo:epsg` in favor of `proj:epsg`
     - `gsd` and `accuracy` from `eo:bands` in the [EO extension](extensions/eo/README.md)
     - `sar:absolute_orbit` and `sar:center_wavelength` fields from the [SAR extension](extensions/sar/README.md)
     - `data_type` and `unit` from the `sar:bands` object in the [SAR extension](extensions/sar/README.md)
-    - Datetime Range (`dtr`) extension. Use the [Common Metadata fields](item-spec/common-metadata.md) instead.
+    - Datetime Range (`dtr`) extension. Use the [Common Metadata fields](item-spec/common-metadata.md) instead
 - STAC API:
     - `next` from the search metadata and query parameter
+- In API, removed any mention of using media type `multipart/form-data` and `x-www-form-urlencoded`
 
 ### Fixed
 
-- The `license` field in Item and Collection spec explicitly mentions that the value `proprietary` without a link means that the data is private.
-- Clarified how to fill `stac_extensions`.
+- The `license` field in Item and Collection spec explicitly mentions that the value `proprietary` without a link means that the data is private
+- Clarified how to fill `stac_extensions`
 - More clarifications; typos fixed
+- Fixed Item JSON Schema now `allOf` optional Common Metadata properties are evaluated
+- Clarified usage of optional Common Metadata fields for STAC Items
+- Clarified usage of paging options, especially in relation to what OGC API - Features offers
+- Allow Commonmark in asset description, as it's allowed everywhere else
+- Put asset description in the API
+- Fixed API spec regarding license expressions
+- Added missing schema in the API Version extension
+- Fixed links in the Landsat example in the collection-spec
+
 
 ## [v0.8.1] - 2019-11-01
 
@@ -311,8 +302,7 @@ Thanks @hgs-msmith, @matthewhanson, @hgs-trutherford, @rouault, @joshfix, @alkam
 
 
 [Unreleased]: https://github.com/radiantearth/stac-spec/compare/master...dev
-[v0.9.0-rc2]: https://github.com/radiantearth/stac-spec/compare/v0.9.0-rc1...v0.9.0-rc2
-[v0.9.0-rc1]: https://github.com/radiantearth/stac-spec/compare/v0.8.0...v0.9.0-rc1
+[v0.9.0]: https://github.com/radiantearth/stac-spec/compare/v0.8.1...v0.9.0
 [v0.8.1]: https://github.com/radiantearth/stac-spec/compare/v0.8.0...v0.8.1
 [v0.8.0]: https://github.com/radiantearth/stac-spec/compare/v0.7.0...v0.8.0
 [v0.7.0]: https://github.com/radiantearth/stac-spec/compare/v0.6.2...v0.7.0

diff --git a/README.md b/README.md
@@ -29,7 +29,7 @@ The minimal amount is specified right now, but best practices should emerge with
 ## Current version and branches
 
 The [master branch](https://github.com/radiantearth/stac-spec/tree/master) is the 'stable' version of the spec. It is currently version 
-**0.9.0-rc2** of the specification. The 
+**0.9.0** of the specification. The 
 [dev](https://github.com/radiantearth/stac-spec/tree/dev) branch is where active development takes place, and may have inconsistent examples. 
 Whenever dev stabilizes a release is cut and we merge dev in to master. So master should be stable at any given time.
 It is possible that there may be small releases in quick succession, especially if they are nice improvements that do 

diff --git a/api-spec/STAC-extensions.yaml b/api-spec/STAC-extensions.yaml
@@ -1,7 +1,7 @@
 openapi: 3.0.1
 info:
   title: The SpatioTemporal Asset Catalog API + Extensions
-  version: 0.9.0-rc2
+  version: 0.9.0
   license:
     name: Apache License 2.0
     url: 'http://www.apache.org/licenses/LICENSE-2.0'
@@ -786,7 +786,7 @@ components:
                       - type: string
                       - type: number
       example:
-        stac_version: 0.9.0-rc2
+        stac_version: 0.9.0
         stac_extensions: []
         id: Sentinel-2
         title: 'Sentinel-2 MSI: MultiSpectral Instrument, Level-1C'
@@ -1610,7 +1610,7 @@ components:
     stac_version:
       title: STAC version
       type: string
-      example: 0.9.0-rc2
+      example: 0.9.0
     stac_extensions:
       title: STAC extensions
       type: array
@@ -1696,7 +1696,7 @@ components:
         assets:
           $ref: '#/components/schemas/itemAssets'
       example:
-        stac_version: 0.9.0-rc2
+        stac_version: 0.9.0
         stac_extensions:
           - eo
           - view
@@ -2106,7 +2106,7 @@ components:
                 rel: search
                 type: application/json
                 title: Search across feature collections
-            stac_version: 0.9.0-rc2
+            stac_version: 0.9.0
             id: naip
         text/html:
           schema:

diff --git a/api-spec/STAC.yaml b/api-spec/STAC.yaml
@@ -1,7 +1,7 @@
 openapi: 3.0.1
 info:
   title: The SpatioTemporal Asset Catalog API
-  version: 0.9.0-rc2
+  version: 0.9.0
   license:
     name: Apache License 2.0
     url: 'http://www.apache.org/licenses/LICENSE-2.0'
@@ -490,7 +490,7 @@ components:
                       - type: string
                       - type: number
       example:
-        stac_version: 0.9.0-rc2
+        stac_version: 0.9.0
         stac_extensions: []
         id: Sentinel-2
         title: 'Sentinel-2 MSI: MultiSpectral Instrument, Level-1C'
@@ -1311,7 +1311,7 @@ components:
     stac_version:
       title: STAC version
       type: string
-      example: 0.9.0-rc2
+      example: 0.9.0
     stac_extensions:
       title: STAC extensions
       type: array
@@ -1378,7 +1378,7 @@ components:
         assets:
           $ref: '#/components/schemas/itemAssets'
       example:
-        stac_version: 0.9.0-rc2
+        stac_version: 0.9.0
         stac_extensions:
           - eo
           - view
@@ -1554,7 +1554,7 @@ components:
                 rel: search
                 type: application/json
                 title: Search across feature collections
-            stac_version: 0.9.0-rc2
+            stac_version: 0.9.0
             id: naip
         text/html:
           schema:

diff --git a/api-spec/openapi/STAC.yaml b/api-spec/openapi/STAC.yaml
@@ -1,7 +1,7 @@
 openapi: 3.0.1
 info:
   title: The SpatioTemporal Asset Catalog API
-  version: 0.9.0-rc2
+  version: 0.9.0
   description: >-
     This is an OpenAPI definition of the core SpatioTemporal Asset Catalog API
     specification. Any service that implements this endpoint to allow search of
@@ -200,7 +200,7 @@ components:
       content:
         application/json:
           example:
-            stac_version: 0.9.0-rc2
+            stac_version: 0.9.0
             id: naip
             title: NAIP Imagery
             description: Catalog of NAIP Imagery.
@@ -291,7 +291,7 @@ components:
                       - type: string
                       - type: number
       example:
-        stac_version: 0.9.0-rc2
+        stac_version: 0.9.0
         stac_extensions: []
         id: Sentinel-2
         title: 'Sentinel-2 MSI: MultiSpectral Instrument, Level-1C'
@@ -660,7 +660,7 @@ components:
     stac_version:
       title: STAC version
       type: string
-      example: 0.9.0-rc2
+      example: 0.9.0
     stac_extensions:
       title: STAC extensions
       type: array
@@ -737,7 +737,7 @@ components:
         assets:
           $ref: '#/components/schemas/itemAssets'
       example:
-        stac_version: 0.9.0-rc2
+        stac_version: 0.9.0
         stac_extensions:
           - eo
           - view

diff --git a/api-spec/package-lock.json b/api-spec/package-lock.json
diff --git a/api-spec/package.json b/api-spec/package.json
@@ -1,6 +1,6 @@
 {
   "name": "api-spec",
-  "version": "0.9.0-rc2",
+  "version": "0.9.0",
   "description": "Generate STAC openapi defintions from fragments.",
   "repository": "https://github.com/radiantearth/stac-spec",
   "license": "Apache-2.0",

diff --git a/catalog-spec/catalog-spec.md b/catalog-spec/catalog-spec.md
@@ -93,14 +93,14 @@ guidance for good recommendations when implementing.
 
 ## Catalog fields
 
-| Element      | Type          | Description                                                  |
-| ------------ | ------------- | ------------------------------------------------------------ |
-| stac_version | string        | **REQUIRED.** The STAC version the catalog implements. STAC versions can be mixed, but please keep the [recommended best practices](../best-practices.md#mixing-stac-versions) in mind. |
-| stac_extensions | [string]   | A list of extensions the Catalog implements.                 |
-| id           | string        | **REQUIRED.** Identifier for the catalog.                    |
-| title        | string        | A short descriptive one-line title for the catalog.          |
-| description  | string        | **REQUIRED.** Detailed multi-line description to fully explain the catalog. [CommonMark 0.29](http://commonmark.org/) syntax MAY be used for rich text representation. |
-| links        | [[Link Object](#link-object)] | **REQUIRED.** A list of references to other documents.       |
+| Element         | Type          | Description                                                  |
+| --------------- | ------------- | ------------------------------------------------------------ |
+| stac_version    | string        | **REQUIRED.** The STAC version the catalog implements. STAC versions can be mixed, but please keep the [recommended best practices](../best-practices.md#mixing-stac-versions) in mind. |
+| stac_extensions | [string]      | A list of extension identifiers the Catalog implements.                 |
+| id              | string        | **REQUIRED.** Identifier for the catalog.                    |
+| title           | string        | A short descriptive one-line title for the catalog.          |
+| description     | string        | **REQUIRED.** Detailed multi-line description to fully explain the catalog. [CommonMark 0.29](http://commonmark.org/) syntax MAY be used for rich text representation. |
+| links           | [[Link Object](#link-object)] | **REQUIRED.** A list of references to other documents.       |
 
 **stac_extensions**: A list of extensions the Catalog implements. This does NOT declare the extensions of children or Items. The list contains URLs to the JSON Schema files it can be validated against. For official [content extensions](../extensions/README.md#list-of-content-extensions), a "shortcut" can be used. This means you can specify the folder name of the extension, for example `pointcloud` for the Point Cloud extension. This does *not* apply for API extensions. If the versions of the extension and the catalog diverge, you can specify the URL of the JSON schema file.
 This list must only contain extensions that extend the Catalog itself, see the the 'Scope' column in the list of extensions.
@@ -145,7 +145,7 @@ might look something like this:
 
 ```json
 {
-  "stac_version": "0.9.0-rc2",
+  "stac_version": "0.9.0",
   "id": "NAIP",
   "description": "Catalog of NAIP Imagery",
   "links": [
@@ -163,7 +163,7 @@ A typical '_child_' sub-catalog could look similar:
 
 ```json
 {
-  "stac_version": "0.9.0-rc2",
+  "stac_version": "0.9.0",
   "id": "NAIP",
   "description": "Catalog of NAIP Imagery - 30087",
   "links": [

diff --git a/catalog-spec/examples/catalog.json b/catalog-spec/examples/catalog.json
@@ -1,5 +1,5 @@
 {
-  "stac_version": "0.9.0-rc2",
+  "stac_version": "0.9.0",
   "id": "sample",
   "description": "This is a very basic sample catalog.",
   "links": [

diff --git a/catalog-spec/json-schema/catalog.json b/catalog-spec/json-schema/catalog.json
@@ -22,7 +22,7 @@
         "stac_version": {
           "title": "STAC version",
           "type": "string",
-          "const": "0.9.0-rc2"
+          "const": "0.9.0"
         },
         "stac_extensions": {
           "title": "STAC extensions",