Added

• --depth=24bit/--24bit — 24-bit or "true" color depth. Contributed by Sotiris Papatheodorou (@sotpapathe).

Modified

• better temporary file name handling. Contributed by @kennbr34.
• use autoconf to check for mcurses. Contributed by @kennbr34.
• CImg is now imported as a git submodule. Contributed by Erick Ochoa (@efferifick)

Fixed

• link against ncurses. Contributed by Josh Braendel (@Jbudone)