Merge pull request #211 from rsmith013/patch-1

Add Context Collections

extensions.md

@@ -98,6 +98,7 @@ Please contact a STAC maintainer or open a Pull Request to add your extension to
 | Name                                                                | Scope                               | Description                                                     | Vendor                                         |
 | ------------------------------------------------------------------- | ----------------------------------- | --------------------------------------------------------------- | ---------------------------------------------- |
 | [Free-text Search](https://github.com/cedadev/stac-freetext-search) | [Item Search](item-search/) request | Adds `q` parameter and free-text search against item properties | [CEDA, STFC, UKRI](https://github.com/cedadev) |
+| [Context Collections](https://github.com/cedadev/stac-context-collections) | [Item Search](item-search/) request | Adds a `collections` keyword to the [context](https://github.com/radiantearth/stac-api-spec/tree/master/fragments/context) extension response. | [CEDA, STFC, UKRI](https://github.com/cedadev) |
 
 ## Creating new extensions