1.3.53

Use docker-compose for faster volume switching

1.3.52: Don't confuse comments with regex

Fixed #199

1.3.51: Regexes can follow `!`

Fixes #197

1.3.50: Require that a regex has some content

Otherwise, the `//` that start a comment could be misread
as regexes.

Fixes #196

1.3.49: Improve regex detection

Fixes #195

1.3.48: Allow `=` inside regexes

A fix for something else introduced a potential issue that when
regular expressions have a `=` inside them, they wouldn't be
recognized as such.

This should make the regex detection more robust by checking
the surrounding code, instead of limiting what can be inside.

1.3.47: Quote url() uri's with quotes in them

Fixes #193

1.3.46: Fix newline trimming around tilde

Fixed #185

1.3.45: Don't collapse newlines after 'continue'

Fixes #178

1.3.44

Add test for #163