[DO NOT MERGE] Preprocessor#19

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therearesomewhocallmetim wants to merge 13 commits into

mapsme:new-felinefrom

therearesomewhocallmetim:preprocessor

Commits on Apr 9, 2016

Commits on Apr 11, 2016

Working on putting the preprocessor into the existing flow.
mapsmetest
committed

Commits on Apr 14, 2016

The preprocessor now has two components.
mapsmetest
committed

Commits on Apr 15, 2016

Commits on Apr 17, 2016

Made some refactorings:
mapsmetest
committed

Commits on Apr 19, 2016

Fixed some bugs, cleaned up a bit;
mapsmetest
committed

Commits on May 4, 2016

Added a sorter for selectors that will be used for creating the tree structure of our mapcss files.
mapsmetest
committed

Commits on May 5, 2016

Commits on May 6, 2016