Update release notes for v0.10.0
Added 744 to releasenotes
Note requirement of pagination middleware in README
No need to require django.contrib.markup
Merge pull request #748 from caktus/747-drop-markup

Fix #747 - No need to require django.contrib.markup
Merge pull request #749 from caktus/746-pagination-middleware

Fix #746 - Note requirement of pagination middleware in README
Updated releasenotes per review comments. Changed release candidate
to 0.9.3 and removed a bugfix message that isn't relevant
Merge branch 'develop' into feature/743-contract-hours