B0_versionSourceSoftware version numbers.
The type for versions. Major, minor, patch and additional info.
next_major ?info (maj, _, _, _) is (maj+1, 0, 0, info).
next_major ?info (maj, min, _, _) is (maj, min + 1, 0, None).
next_patch (maj, min, patch, _) is (maj, min, patch + 1, info).
with_info (maj, min, patch, _) info is (maj, min, patch, info).
of_string parses version strings of the form:
[v|V]major.minor[.patchlevel][(+|~)additional-info]into (major, minor, patch, (+|~)additional_info) tuples. If no patchlevel is found 0 is used.
string_drop_initial_v s drops a leading 'v' or 'V' from s.
pp formats a version.
pp_string formats a version string.