Merge pull request #774 from wmde/follow-up-773

Merge pull request #774 from wmde/follow-up-773

minor cs fixes

Fixed typo

Fixed typo

[skip ci]

Update RELEASE-NOTES.md

Update RELEASE-NOTES.md

[skip ci]

Add release notes of 6.3.1

Add release notes of 6.3.1

minor cs fixes

minor cs fixes

Merge pull request #773 from wmde/jsonp-response

Merge pull request #773 from wmde/jsonp-response

Allow subscription via JSONP

Allow subscription via JSONP request

Allow subscription via JSONP request

Allow JSONP requests

Allow JSONP requests

Add postprocessing for JSONP requests (GET requests with
"jsonp_callback" parameter and application/javascript or
application/json accept type).

Merge pull request #772 from wmde/subscription-validation

Merge pull request #772 from wmde/subscription-validation

Remove name validation for subscriptions

Merge pull request #771 from wmde/confirm-subscription-route

Merge pull request #771 from wmde/confirm-subscription-route

Make subscription confirmation a named route