Issue #3625

Closes #3475

Closes #3470

Closes #3417

Closes #3244

[attr, calc, counter, counters, linear-gradient, matrix, matrix3d,
perspective, radial-gradient, repeating-linear-gradient,
repeating-radial-gradient, rotate, rotate3d, rotateX, rotateY, rotateZ,
scale, scale3d, scaleX, scaleY, scaleZ, skew, skewX, skewY, symbols,
translate, translate3d, translateX, translateY, translateZ, var]

Add support for @counter-style blocks by making them and @font-face
blocks match a new "restricted_atBlock" state based on "font_face"

Issue #3066

Issue #3064

Bumping them for every release just adds too much git
noise and history blowup.

Issue #2551

Issue #2465

Closes #2131

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

Closes #1925.

Kill all tabs.

Issue #1851

Closes #1657

Tests are now specified in a less redundant format, and should be
easier to read and write.

This basically matches the CSS3 spec (except it doesn't match non-ascii characters).

- Added link to tests on mode page
- More consistent naming with CSS spec (some of the previous var naming was completely incorrect/misleading)
- Improved highlighting
  - Match vendor prefixes
  - Check for known properties and values (known properties are bold, unknown are not)
  - Added highlighting for media queries
- Cleaner stacking of state