consider supporting alternative versioning schemes

[joemiller]

It would be interesting to support other versioning schemes besides SemVer. CalVer (https://calver.org/) comes to mind. Are there others we should consider?

[joemiller]

But not this one =) http://sentimentalversioning.org/

ZeroVer, Root versioning. Plus already mentioned SemVer and CalVer would make 4 top most popular versioning schemes if we don't take custom schemes into the account.

[joemiller]

@serhii-fedchenko thanks! I hadn't heard of these before.

Some links/specs I found from googling:

• https://0ver.org/
• https://root.cern/about/versioning/

Please add any additional resources that might be useful for implementors.

[pboulos]

I decided to write up a PR that would support this in an extensible manner. Please let me know your thoughts: #181