Some improvements to CI

[giordano]

• Documentation: build with latest version of Julia 1.x
• TagBot: use newer setup, see documentation
• CI: remove duplicate documentation job

Usually I run CI on 3 versions of Julia:

• the oldest one I claim support for (in your case it would be "1.0")
• the latest stable version (can be indicated with "1")
• "nightly"

I didn't change this, leaving the decision up to you.

Also, for most of my packages I don't fiddle too much with internals, where 32-
vs 64-bit would matter, so I usually don't run CI on 32-bit systems at all, to
save some resources. I'm leaving also this up to you 😉

[codecov]

Codecov Report

Merging #1 (f4b68ce) into main (5920574) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main       #1   +/-   ##
=======================================
  Coverage   99.10%   99.10%           
=======================================
  Files           2        2           
  Lines         112      112           
=======================================
  Hits          111      111           
  Misses          1        1           

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[giordano]

I didn't touch the Manifest.toml files, but personally I don't find them very useful for packages: they're picked up by CI jobs, which effectively prevents you from testing the package with different versions of the dependencies, as they come out.

On the contrary, manifest files are absolutely important in "applications" (which can be the script you actually use to run an analysis pipeline): with the manifest you record the status of all dependencies, so that you can reproduce exactly the same analysis later or on a different system.

[matteobachetti]

@giordano thanks a lot for this PR! One of the reasons why I had Julia 1.0 out was that some dependencies were broken. I figured that this package will run on Julia 1.5+ anyway, given that it is so new and in such an early state.
About dependencies: it wasn't clear to me how to specify dependencies without the Manifest file actually, as my first experiments failed due to that. Could you give me an example? Thanks!