This is a bug fix release, with the following changes:
- txt2man: remove ksh check (@eribertomota)
- src2man: make it compliant with gawk >= 5.0.1 (@eribertomota)
- txt2man: allow punctuation characters in section names
- txt2man: allow display blocks starting with a number
- *man: check for dependencies (@eribertomota)
- build: make build reproducible