[DOC/TEST] Only support and test current Python versions

Signed-off-by: Olivier Mehani <[email protected]>

Author: shtrom

.travis.yml

@@ -1,10 +1,9 @@
 language: python
 python:
-  - "2.7"
-  - "3.4"
-  - "3.5"
   - "3.6"
   - "3.7"
+  - "3.8"
+  - "3.9"
 
 before_install:
   # Login to docker hub

ChangeLog.md

@@ -13,6 +13,12 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - Updated testing commands and dependency declaration to remove deprecated uses
   of setuptool's `tests_require` configuration and `test` command.
 
+### Added
+- Started active support for Python 3.7--3.9
+
+### Changed
+- Dropped support for EoLed Python<3.6
+
 ## [v0.3.1] - 2019-08-07
 ### Fixed
 - Fixed an issue where the `DataApi` class's `results_iter` method would return no data 

README.md

@@ -55,12 +55,9 @@ There's more features, besides. See the detailed list of SDK features on the [re
 Not using Python? See the [SDKs for other languages](https://help.learnosity.com/hc/en-us/sections/360000194318-Server-side-development-SDKs).
 
 ### Supported Python Versions
-The following Python versions are tested and supported:
 
-* 3.6.x
-* 3.5.x
-* 3.4.x
-* 3.3.x
+We support and test for [all currently supported versions of
+Python](https://devguide.python.org/#status-of-python-branches).
 
 [(Back to top)](#table-of-contents)
 
@@ -323,4 +320,4 @@ Thanks for reading to the end! Find more information about developing an app wit
 * [reference.learnosity.com](http://reference.learnosity.com) -- developer reference site, and
 * [authorguide.learnosity.com](http://authorguide.learnosity.com) -- authoring documentation for content creators.
 
-[(Back to top)](#table-of-contents)
+[(Back to top)](#table-of-contents)