* Ensure "--args" is last argument of gdb command
To debug an application+command line arguments "--args" is used as last command line argument of gdbgui.
Everything after "--args" must be passed then to gdb also as LAST command line argument.
This was not the case, but it is now ensured. By default gdb is now used in any case with "--args".
* fix formatting
* only pass args when they are present
* add unit tests
* add additional test case
Co-authored-by: Chad Smith <chad@grassfedcode.com>
* replace makefile with noxfile
* fix unit test
* drop pypy support
* more strict nox session calls in travis
* change session name
* update manifest
* update contributing
