rename AnsiControlSequence to ControlSequence
rename AnsiControlSequenceFilter to ControlSequenceFilter
rename AnsiControlSequenceFilterTest to ControlSequenceFilterTest
rename AbstractAnsiControlSequenontrolSequence into AbstractControlSequence
rename AnsiControlSequenceType into ControlSequenceType
rename AnsiControlSequenceFactory into ControlSequenceFactory
rename AnsiControlSequenceHandler into ControlSequenceHandler
rename AnsiDocument into Document
rename AnsiStyleRange to StyleRange, introduce DelegateStyleRange class and rename StyleRangeWrapper to DelegatingStyleRange