Implement selections as dedicated classes, instead of vectors of display objects and vectors of those vectors
Make the basic case of AXRController's select() method to be non processing (just regular selection)
Fix issues with flags, such as negating and using multiple selector chains. Now instead of storing the default rule state in the rule object, all rules are added in the off state, and then activated in a 2nd pass. This enables even really complex selections to use the correct rule state where appropriate.
Handle reset layout needs more gracefully
Optimize redrawing a bit
Add a line of code so we can break on it when debugging layout
Log stuff that goes through std_log to the standard console, while those that go through axr_log go to the error window. We need to update all those old log commands that are being logged with the level instead of the debug channel.
Implement border positions and segments. Some minor issues remain, though. Close #13
Add name of the element as _debugName for now, until the code is more mature. This is a much quicker way to be able to figure out on what element something is happening, rather than printing the AXRString.
Implement ::press flag
Correctly detect booleans in flow and visible properties
Fix some issues with percentages and expressions
Fix refs in display object's visible and gradient's startColor and endColors properties
Fix trailing whitespace n'stuff
Update test to new sibling combinator behavior expectations
Merge branch 'master' into development
Merge branch 'master' of https://github.com/axr/core into development
Merge branch 'master' into development
Merge branch 'master' into development

Conflicts:
	src/core/axr/AXRController.cpp
	src/core/axr/AXRController.h
	src/core/hss/HSSTypeEnums.h
	src/core/hss/objects/HSSDisplayObject.h
	src/core/hss/objects/actions/HSSFlagAction.cpp
	src/core/hss/parsing/filters/HSSEmptyFilter.cpp
	src/core/hss/parsing/filters/HSSFlag.cpp
	src/core/hss/parsing/functions/HSSRefFunction.cpp
	src/core/hss/various/HSSMultipleSelection.h
	src/core/hss/various/HSSSimpleSelection.h
Fix merge fuckup