* src/vteapp.c: implement iconify, deiconify, raise, lower, maximize, restore,
	refresh, resize, and move signals.
* src/vte.c: add vte_terminal_match_remove().
* src/vte.c (vte_sequence_handler_cb): clear the current column in addition to
	columns to the left, spotted by Sam Varshavchik.
* src/vte.c:  Use g_array_set_size() to clear arrays instead of removing each
	element.  Properly initialize new columns with just the default colors
	and not other attributes (#96978).
* src/vte.c (vte_sequence_handler_ta): revert to non-overwriting tabs, otherwise
	we got occasional drawing artifacts.