2.4:
 * ansi2html: -l (--no-wrap), --style, -c (--contrast)
 * allow testing installed binaries

2.3:
 * pipetty: hard-code PAGER=cat

2.2:
 * ttyrec2ansi: use cached stdio, for >4× speedup

2.1:
 * bugfix: infinite loop on 0xFF on unsigned-char architectures

2.0:
 * split out of KBtin
 * migrate from autotools to CMake
 * relicense to MIT
 * use a much darker palette in on-white mode, especially for brown and yellow