XBPS 0.28.1 released

A new XBPS stable version has been released: 0.28.1. This release implements per package RSA signatures (among other features).

Release notes:

Implemented per package RSA signatures, replacing the repository index signature from 0.27. There’s now a <binpkg>.sig file with the RSA signature for any pkg in a repository; the signature files are generated by xbps-rindex(8).
Implemented on-demand repository access: repositories are registered into a private queue only on first access and not unconditionally.
xbps-query(8): -o (local ownedby mode) does not print directories; it’s unnecessary anyway because xbps never extracts empty directories.
The --repository option in xbps-install(8) and xbps-query(8) now adds the repositories at the top of the list, rather than overriding the list specified in a configuration file.
Fixed issue #24
Fixed issue #25
Fixed issue #26