Does not parse unicode pkgver

[simon04]

This library fails to parse 2.0.0.α.r29.g18fc492 (is used in https://aur.archlinux.org/packages/shaman-git/) into a CompleteVersion. libalpm/version.c uses isalnum, and per man 3 isalnum:

       isalnum()
              checks for an alphanumeric character; it is equivalent to (isalpha(c) || isdigit(c)).

       isalpha()
              checks for an alphabetic character; in the standard "C" locale, it is equivalent to (isupper(c) ||  islower(c)).   In  some
              locales, there may be additional characters for which isalpha() is true—letters which are neither uppercase nor lowercase.

https://github.com/simon04/aur-out-of-date/issues/7

[Morganamilo]

Unicode in a version number. Never thought I'd see that.