bitmap: update to 1.1.0.

Alan Coopersmith (10):
      Use _CONST_X_STRING to make libXt declare String as const char *
      Fix spelling/wording issues
      gitlab CI: add a basic build test
      Build xz tarballs instead of bzip2
      Move bitmaps into a new bitmaps directory
      test: add round-trip-test for atobm & bmtoa
      atobm: accept single character lines
      atobm: close memory leaks
      gitlab CI: stop requiring Signed-off-by in commits
      bitmap 1.1.0

Jeremy Mates (1):
      bitmap: Fix a crash with underspecified dimensions

(wiz)