Merge branch 'development' of https://github.com/open-ephys/plugin-GUI into development

Builds/MacOSX/OpenEphys.xcworkspace/contents.xcworkspacedata

...OpenEphys.xcworkspace/xcshareddata/xcschemes/All.xcscheme

Builds/MacOSX/Plugins/Config/Plugin.xcconfig

...playNodeBeta/LfpDisplayNodeBeta.xcodeproj/project.pbxproj

.../Plugins/LfpDisplayNodeBeta/LfpDisplayNodeBeta/Info.plist

Builds/MacOSX/open-ephys.xcodeproj/project.pbxproj

Source/CoreServices.cpp

Source/CoreServices.h

Source/MainWindow.cpp

Source/Plugins/ChannelMappingNode/ChannelMappingEditor.cpp

Source/Plugins/KWIKFormat/RecordEngine/HDF5Recording.cpp

Source/Plugins/LfpDisplayNodeBeta/LfpDisplayCanvas.cpp

Source/Plugins/LfpDisplayNodeBeta/LfpDisplayCanvas.h

Source/Plugins/LfpDisplayNodeBeta/LfpDisplayEditor.cpp

Source/Plugins/LfpDisplayNodeBeta/LfpDisplayEditor.h

Source/Plugins/LfpDisplayNodeBeta/LfpDisplayNode.cpp

Source/Plugins/LfpDisplayNodeBeta/LfpDisplayNode.h

Source/Plugins/LfpDisplayNodeBeta/Makefile

Source/Plugins/LfpDisplayNodeBeta/OpenEphysLib.cpp

Source/Processors/Editors/ChannelSelector.cpp