feat: version release/prerelease options

[astorath]

problem to solve:

• rpm and deb have quite different versioning scheme for releases / prereleases:
  https://fedoraproject.org/wiki/Package_Versioning_Examples#Complex_versioning_examples
  https://www.debian.org/doc/manuals/maint-guide/first.en.html#namever
• it is impossible right now to use release version for nfpm deb package (because release part is actually used as prerelease)

changes:

• added prerelease option to specify it separately from release
• for deb: prerelease comes after tilde, release after dash (breaking!)
• for rpm: prerelease comes with default 0.1 release, release is not changed
• semver parsing now treats numeric prerelease data as release version
• semver parsing now treats non-numeric prerelease data as prerelease version

[caarlos0]

thanks for the PR

suggesting couple of changes

[codecov-io]

Codecov Report

Merging #111 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #111   +/-   ##
=======================================
  Coverage   70.94%   70.94%           
=======================================
  Files           6        6           
  Lines         499      499           
=======================================
  Hits          354      354           
  Misses         91       91           
  Partials       54       54

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[caarlos0]

thanks, sorry for the delay

[caarlos0]

This pull request has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.