Adds an indication for the number of available messages to the response to the MSGS? query, HB response, and message response in addition to the ID of the next available message.
Changing NEXT MSG ID logic to send first available ID instead of next in list when sending messages
Allow message inbox to dock into the main UI
Enable column sorting in the message table
Rework mark-as-read signals to trigger on row deselection
Add SemiSortableHeader subclass of QHeaderView
Rename all header files with .h extension
Fix function declaration in HamlibTransceiver.h that overrode member function but was not marked override
Remove unused variable in Modulator.cpp
Remove unused files from source tree
Remove duplicate LazyFillComboBox files
Reformat codebase to LLVM C++ standard
