Cleaning up null-pointer-deallocation warnings.
Merge pull request #1386 from csimons/cleanup-null-pointer-deallocation-warnings

Cleaning up null-pointer-deallocation warnings.
LmmsStyle: Remove legacy code
Added 4th-order Linkwitz-Riley filter object to BasicFilters.h
Merge pull request #1399 from diizy/master

Added 4th-order Linkwitz-Riley filter object to BasicFilters.h
Transposed form of Linkwitz-Riley
Merge pull request #1400 from diizy/master

Transposed form of Linkwitz-Riley
Removed vim-config comment from SampleBuffer.cpp.
Removed vim-config comment from main.cpp.
Removed vim-config comment from ExportProjectDialog.cpp.
Removed vim-config comment from SongEditor.cpp.
Merge pull request #1403 from csimons/vim-comments

Remove personal vim-config comments from source files.
Merge remote-tracking branch 'upstream/master' into do-not-halt-playback-upon-open-dialog
Added 'bool stopPlayback' parameter to MainWindow::mayChangeProject() to preserve old behavior outside of 'Open project dialog' case; fixes #1384