Add support for semantic versioning - #93

No objections to this, but we should meet some time over jitsi so you can show me how to work this feature.

the year of horror is coming to a close for me...

fwiw this change makes elpaca complain about org-noter version:

log:
[2024-09-16 17:09:46] Package queued
[2024-09-16 17:09:47] Continued by: elpaca--process
[2024-09-16 17:09:47] Continued by: elpaca--configure-remotes
[2024-09-16 17:09:47] Continued by: elpaca--checkout-ref
[2024-09-16 17:09:47] Continued by: elpaca--dispatch-build-commands
[2024-09-16 17:09:47] Queueing Dependencies
[2024-09-16 17:09:47] Continued by: elpaca--queue-dependencies
[2024-09-16 17:09:47] Checking dependency versions
[2024-09-16 17:09:47] elpaca--check-version: (error "Invalid version syntax: ‘v1.6.0’ (must start with a number)")

This is because version-to-list craps out when supplied the version string prefixed with "v".

I don't think it's an invalid format though, going from melpa's recipe format spec (https://github.com/melpa/melpa#recipe-format). Seems like their default regex deals with this.

The error occurs because elpaca checks the version using elpaca--check-version with its own regex. They could fix the regex I guess.

But from a quick grep seems like the prefix is quite uncommon in the package header, at least in the packages I have installed:

user:~/.config/emacs/elpaca/repos
$ rg "^;; Version: [0-9]" | rg ".el" | wc -l
446

user:~/.config/emacs/elpaca/repos
$ rg "^;; Version: v" | wc -l
1

fwiw this change makes elpaca complain about org-noter version:

Thank you, I updated the version in the latest master.