Merge pull request JanDC#10 from krzysztof-pyrzyk-ah/bugifx/fatal-err…

…or-when-no-result-cache-provided

Fix fatal error when no cache provided in constructor

Merge pull request JanDC#9 from JanDC/ignore-improper-selectors

If no expression can be build, the selector is invalid

Expanded rules cache to included negatives / provide html cache ident…

…ifier to prevent collisions across pages

Cache rules further by storing the combination of css/rules

Cache expressions

Merge pull request JanDC#6 from tvlooy/master

Revert

Merge pull request JanDC#5 from tvlooy/empty_html

avoid warning that html is empty

Merge pull request JanDC#2 from tvlooy/implement_abstract_method

Implement Twig_ExtensionInterface::getName

reverted reencoding the processed properties

Added charset and unicode support