Added 3.0 changelog
Added 3.0.6-rc1 changelog
Fixed issue with inconsistent use of punctuation and wording of Tutorial 5 summary
Merge pull request #2313 from jbridson/patch-1

Fixed issue with inconsistent use of punctuation and wording of Tutorial...
Fixed Grammatical errors and issues where sentences didn't make sense.
Merge pull request #2315 from jbridson/patch-2

Fixed Grammatical errors and issues where sentences didn't make sense.
Merge remote-tracking branch 'origin/3.0' into 3.1

Conflicts:
	docs/en/changelogs/index.md