Merge branch 'stable-1.2'

# Conflicts:
#	.gitmodules
#	.travis.yml
#	.travis/linux..before_install.sh
#	.travis/linux..install.sh
#	CMakeLists.txt
#	cmake/linux/package_linux.sh.in
#	cmake/modules/BuildPlugin.cmake
#	include/AutomatableModel.h
#	plugins/MidiImport/MidiImport.cpp
#	plugins/carlapatchbay/CMakeLists.txt
#	plugins/carlarack/CMakeLists.txt
#	src/core/Song.cpp
#	src/core/Track.cpp
#	src/gui/editors/SongEditor.cpp
#	tests/src/core/AutomatableModelTest.cpp

.travis.yml

@@ -1,6 +1,6 @@
 language: cpp
 compiler: gcc
-dist: trusty
+dist: xenial
 sudo: required
 cache:
     directories: