Log Message:
Update to 0.30

Upstream changes:
0.30  2020-10-26
 - Added function File::MimeInfo::has_mimeinfo_database() to test if
    mimeinfo database is found
 - mimetype and mimeopen now exit with an error code if no mimeinfo database
    is found
 - Added explicit dependency on Encode::Locale
 - Properly decode parameters for `mimeopen` and `mimetype`.
    Patch provided by Nikos Skalkotos
 - Fix for undefined defaults (fixes #36).
    Reported & fix provided by Martin Vassor
 - Improved installation instructions, specifically on macOS, by
    Oleg Kostyuk & Michiel Beijen