* (C++) Macros should not be used to define constants
* (C++) Memory should not be managed manually
* (C++) "void*" should not be used in typedefs, member variables, function parameters or return type
* (C++) When the "Rule-of-Zero" is not applicable, the "Rule-of-Five" should be followed
* (C++) "switch" statements should have "default" clauses
* (C++) "explicit" should be used on single-parameter constructors and conversiosn operators
* (C++) Non-const global variables should not be used
* refactor: add an enumeration of the script types
This simplifies the API by having a single set of functions that can be
used for getting/setting all the script types.
* Rename GTK client .c files to .cc
* Fix GTK client build errors after C to C++ switch
* Remove `G_{BEGIN,END}_DECLS`
Co-authored-by: Charles Kerr <charles@charleskerr.com>