Adding more F# .fs samples. Fixes #1814
Better output for failing test
SCSS isnt SASS
Fix detection for invalid shebang
v4.2.2
Clean before running janky build
Fix heuristic for .fs
New F# sample to test fix for .fs heuristics
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.