Merge pull request Torann#45 from boly38/feature/reviewsAuthors

multiple reviews and authors

Merge pull request Torann#42 from boly38/feature/repeatingAttributes

Fixes Torann#41 an Article with N Comments

Merge pull request Torann#39 from boly38/feature/website

improve WebSite context

Merge pull request Torann#34 from votemike/fix-typehint

Fixing typehint

Update composer.json

Merge pull request Torann#23 from nokimaro/master

Multiple albums and artists for MusicRecording

Merge pull request Torann#18 from oefada/issue-17

RE#17 articleBody missing from NewsArticle class

Allow image on biz

- Add corporation

 - Add the ability for custom context types
 - Fix file structure to adhere to PSR-4 file structure

- add music groups