Unittest conditional styles, add loadImports API to fit Rhapsode's use.

Test rules capturing of ConditionalStyleSheet.

Code cleanliness: drop unneeded ' from Data.CSS.Style.Cascade.dispatch'

Test CSS variables.

Fix: ConditionalStyles reversed CSS precedance.

Fix precedence of conditional blocks (+API redesign)

Implement @supports.

Draft interpretor for @supports.

Media queries: fix popping two items off stack.

I forgot that FIFO reversed the order of the list.

Implement @import & @media

Dependency injection required for an HTTP client library.

Fix syntax errors in ConditionalStyles

Support multiple @document conditions (FIX)

Merge branch 'master' of git.nzoss.org.nz:alcinnz/stylish-haskell

Switch @document from conjunctive conditions to disjunctive conditions.

Implement @document rules (save regexp() conditions).

I've still got to select a regexp library to power it.

Add build instructions.

Add contribution instructions.

Merge branch 'master' of git.nzoss.org.nz:alcinnz/stylish-haskell

Describe how I'm treating the two major version numbers.

Add bounds to all dependencies.