Fix detection for invalid shebang
SCSS isnt SASS
Merge pull request #1818 from github/remove-scss-from-sass

SCSS isnt SASS
Merge pull request #1813 from github/invalid-shebang

Fix detection for invalid shebang
v4.2.2
Clean before running janky build
Merge pull request #1820 from github/cut-release-v4.2.2

v4.2.2
Merge branch 'master' into FS-samples
Merge branch 'FS-samples' of github.com:github/linguist into FS-samples