added the ctrl+c interrupt to kill the program
added ttyACM to the list of serial connections to look for
added a second message passing interface to the threaded tasks
started working on better exception handling for connections
finished error catching for the time being
created a list of currently open serial ports to be used with the menu
currently active serial ports are displayed on the connection menu
can now manually connect to serial ports from the reader menu
added method to disconnect manually from a serial port
removed the possibility of multiple databases on a single computer
added safety close check for modified attendance documents
Added version number to about screen
Disabled all of the un-implemented menu bar options