Add support for DECSTR (Soft Terminal Reset)
DECSTR is a level 2 control (VT2xx and up), and is to be used instead of RIS (Reset to Initial State), which can initiate a self-test and drop the connection on some hardware terminals.
DECSTR is a level 2 control (VT2xx and up), and is to be used instead of RIS (Reset to Initial State), which can initiate a self-test and drop the connection on some hardware terminals.