LICENSE: Update year range.

Use `MAN_DIR` in Makefile, instead of `MANPATH`.

Update to 2.3.0.0.

Update to 2.2.5.1.

Update to 2.2.5.0.

Merge pull request #2 from capezotte/main

seekablepipe fixes:
* correct link in seekablepipe.1
* add seekablepipe.1 to Makefile

seekablepipe.1 fixes

Add to it to Makefile, and fix typo on upstream URL.

Add LICENSE.

Initial commit.