Added section for release notes and completed release notes for 3.0.6-GA
Fixed sidebar to replace dashes with spaces
Fix release notes sidebar display
Fixed migration docs for 3.0.6
Add spacing in-between code blocks so that it will be displayed correctly
Fix the spring instrument download link
Fixed contributing such that it points to the contributing doc on GitHub
Add a title to the 3.0.6 release notes
Added release notes for all 3.0.x versions of Broadleaf
Update Removing-Thymeleaf.md
Remove out of date docs
Delete Changelog.md
Merge pull request #9 from watermelonjuice/patch-2

Delete Changelog.md
Remove changelog link from the appendix sidebar since it is now deleted
Update the guide for single table inheritance to reference Spring instrument
Added 3.0.7 release notes
Added sidebar link for 3.0.7 release notes
Update getting started to reference the latest 3.0 workspace download
Add warning for 3.0.7-GA release notes
Add release notes for 3.0.8-GA