Add Makefile with sync designation

[coatless]

Close #50 by implementing a make sync/make.

[coatless]

Thinking about this more, I'll probably go back to the more "verbose" version in eb9cec7 instead of the symbolic rules to simplify the version injection.

[gadenbuie]

I think that's a good idea, it was also my first impression looking at the PR, but I hadn't had time to write back yet. I think it'll be a bit more approachable and we may need slightly different processes for version updating anyway.

[coatless]

Okidokie, we have the version information being set in: lib/version.txt.

This information is then written into an appropriate config.{lua,R,py} file. From there, the version string is used in the relevant HTML dependency attachment.

Did you want the version information to be written into the asset files via a comment? (/* CSS countdownEmbedded: x.y.z */, // JS countDownEmbedded: x.y.z.) Or do you think the config file approach would be sufficient enough?

(P.S. The quarto CSS has local changes for RevealJS support that probably should go into the lib directory, c.f. #57 )

[gadenbuie]

Thanks for this! I updated the make file with a make help target that is used by default with make without arguments:

❯ make
debug              Print all variables for debugging
help               Show help messages for make targets
sync-all           Sync web assets to all subpackages
sync-python        Sync web assets to Python package
sync-quarto        Sync web assets to Quarto extension
sync-r             Sync web assets to R package

(This trick was picked up from https://github.com/krisnova/Makefile.)

I also re-arranged how we track source files and I renamed sync to sync-all so that it sorts correctly in the help menu. There's also a new make debug target to check the varaibles used in the Makefile.

[gadenbuie]

I like countdown_version a little better that countdown_embedded. There's a little room for ambiguity, but within each package, the unqualified version can be the package/extension version, e.g. packageVersion("countdown") in R or __version__ in Python.

[coatless]

Okidokie, we could always do: asset_version or the more verbose countdown_asset_version if need be later on.

[gadenbuie]

I renamed this because make help will sort targets by name and sync-all shows up first in the list while sync shows up after the other sync targets.

[coatless]

Ahh, the true reason why -all was needed :)

[coatless]

The make help is a neat trick!

Thanks for adding in debug and simplifying the SRC_FILES merge.

Feel free to merge in whenever you have a moment.

[coatless]

Ahh, the true reason why -all was needed :)

[coatless]

Okidokie, we could always do: asset_version or the more verbose countdown_asset_version if need be later on.