This reworks the way versions are handled internally to reverse the
semantics such that the individual semver components (major, minor,
patch, prerelease, and buildmetadata) are parsed from a full string and
exported at init time.
Also, since the version is now parsed and verified to be accurate, it
updates the pre-release parsing to properly support dots as required by
the spec and combines the pre-release and build normalization funcs
since they are now the same.
This provides a few main benefits:
- Allows a single linker override to fully specify the version string
instead of having separate ones that can only override the prerelease
and build metadata portions
- Provides run-time checks to ensure the full version string is valid
per the semver spec regardless of whether it was specified directly in
the source or provided via the linker
- Is slightly more efficient since the full version string is no longer
dynamically created on each invocation
Finally, while here, add some comments regarding the release process to
help maintainers.
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