From the changelog:
2020.06.25:
- Fixed a memory leak in the "sha1()" function (a "EVP_MD_CTX" object was not being deleted).
(Thanks to Amir Perlman for reporting this.)
2020.06.23:
- Moved all definitions of PREFIX from "Makefile.tail" files to "Makefile.head" (so that
it can be redefined by a "config.*" file, if desired.
Also changed the definition of EXE in "config.mingw" to be ".exe".
(Thanks to Eric Beuque for this suggestion.)
2020.06.22:
- Fixed a typo in the previous release that could cause a compilation problem for some
developers. (Thanks to Eric Beuque for reporting this.)
e242d337f6