Rename song to Song
Rename bb_track_container to BBTrackContainer
Rename drumsynth to DrumSynth
Rename engine to Engine
Rename ladspa_2_lmms to Ladspa2LMMS
Rename ladspa_manager to LadspaManager
Rename fixes
Rename note to Note
Rename project_version to ProjectVersion
Rename timeLine to Timeline
Rename automatable_button to AutomatableButton
Rename automatable_slider to AutomatableSlider
Rename caption_menu to CaptionMenu
Rename fixes
Rename a lot…
Rename a lot of files

* about_dialog -> AboutDialog
* bb_editor -> BBEditor
* export_project_dialog -> ExportProjectDialog
* setup_dialog -> SetupDialog
* string_pair_drag -> StringPairDrag
Rename a lot of classes

* aboutDialog -> AboutDialog
* bbEditor -> BBEditor
* exportProjectDialog -> ExportProjectDialog
* setupDialog -> SetupDialog
* stringPairDrag -> StringPairDrag
Rename bbTrack, trackContentObject and friends
Rename basicFilters/basic_filters.h
Rename tabButton/tab_button