Fix detection for invalid shebang
Fix heuristic for .fs
New F# sample to test fix for .fs heuristics
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 pull request #1817 from pchaigno/fix-fs-heuristic

Fix .fs heuristic
Merge branch 'master' into FS-samples
Merge branch 'FS-samples' of github.com:github/linguist into FS-samples
Merge pull request #1816 from github/FS-samples

Adding more F# .fs samples. Fixes #1814
v4.2.3
Merge pull request #1821 from github/cut-release-v4.2.3

v4.2.3
Add Forth extension .fr; and a sample.
Add 'text' language and heuristics for .fr.
Add .html.fr and .xml.fr; plus samples for .txt.