Merge pull request github-linguist#2500 from github/cut-release-v4.5.9

Cut release v4.5.9

Merge pull request github-linguist#2483 from github/cut-release-v4.5.8

v4.5.8 release

Bump to 4.5.7

Merge pull request github-linguist#2456 from github/cut-release-v4.5.6

Cut release v4.5.6

Temporarily removing Handlebars highlighting

Merge pull request github-linguist#2295 from github/cut-release-v4.5.4

Bumping version to v4.5.4

Merge pull request github-linguist#2264 from github/grammar-update

Updating grammars

Merge pull request github-linguist#2241 from github/cut-release-v4.5.2

v4.5.2

Merge pull request github-linguist#2017 from github/revert-2014-rever…

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Cut 4.5.0 release

Bumping version to 4.4.3