Changed tst_copypastesymbollist to use the new cmdPaste in paste.cpp
Added SelectionWindow class.
Added selection filter class.
Added selection filter object to score.
Added communication between selection window and selection filter.
Added example filtering for dynamics.
Added filtering of articulations.
Added updating of selection window when switching scores in musescore.
Added cloneRange function that creates a modifiable copy of range.
Added filterRange method for copied segment list.
Method only works for dynamics.
Added const modifiers.
Added function that sets selection filters.
Added test suite for selection filter.
Added compare and save mime data function in testutils.
Added test for dynamic filtering.
Added filtering of articulations.
Added test for articulation filter.
Created a general function for filter type testing.
Moved selection window labels to an array.
Added shortcut for selection window - F6.
Added voice filtering.
Created pasteDestination function that returns segment and staff idx.
Moved current paste functionality to pasteReplace.
Changed paste command to not remove segments before paste.
The default shortcut for pasteReplace is Ctrl+Shift+P.