libpsl-0.20.0
rename src/make_dafsa.py to src/psl-make-dafsa, add documentation
Add functions psl_latest() and psl_dist_filename()
Amend start of comments in lookup_string_in_fixed_set.c
Add TLDs to (DAFSA) data to allow skipping the star rule
Replace psl2c by psl-make-dafsa
Update copyrights