Some properties were outdated and some other were missing according to last
version of the CSS Grid Layout spec:
http://www.w3.org/TR/css3-grid-layout/#property-index

..with the newly added simple support for @keyframes

Closes #2161

Also resorted the next few lines so one would not stick out farther than
the others.

https://developer.mozilla.org/en-US/docs/Web/CSS/animation-fill-mode

Closes #2162

Closes #2146

Closes #2141

Issue #2136

Add //-comment support for F#

Issue #2136

Add support for the F# programming language. Highlighting is provided
for all keywords, number literals, strings, ML-style comments and select
built-ins. C-style comments not currently supported.

https://developer.mozilla.org/en-US/docs/Web/CSS/At-rule

Issue #2135

Issue #2131

Closes #2131

Closes #2139

Closes #2123

Closes #2112

Closes #2099

Closes #2098

Also add nesting depth information (via `quote-#`) and max
nesting depth option to warn user when they've nested blockquotes
too deeply.

Issue #2105

Issue #2087

Closes #2083
Issue #2084

Issue #2065

Issue #2064

And put string in alphabetical order.

- varying
- xml
- bit

Closes #2039

Closes #2040

Closes #2050

All tests now check whether indentation from mode corresponds
to the indentation in the test source. test.indentation is
gone.

Issue #2049

Issue #2048