mouse input events don't seem to indicate if the event is a drag or not

[tstack]

It doesn't look like the ncinput structure has a way to indicate if a mouse input event is a drag or not (i.e. the user moves the mouse while holding down a button). The mouse tracking escape sequences add 32 to the button number to indicate a drag, but this seems to be lost in this code:

notcurses/src/lib/in.c

Lines 614 to 625 in 3a3c75e

	if(mods % 4 == 3){
	tni.id = NCKEY_MOTION;
	tni.evtype = NCTYPE_RELEASE;
	}else{
	if(mods < 64){
	tni.id = NCKEY_BUTTON1 + (mods % 4);
	}else if(mods >= 64 && mods < 128){
	tni.id = NCKEY_BUTTON4 + (mods % 4);
	}else if(mods >= 128 && mods < 192){
	tni.id = NCKEY_BUTTON8 + (mods % 4);
	}
	}

Please include the following data:

• notcurses version (available from notcurses-demo i)

v3.0.11