Remove asserts from precompile

[timholy]

This shouldn't be merged to master; instead, there should be a special branch created (e.g., release-0.4). However, since that branch doesn't exist I was unable to submit my pull request against it. So this may take a bit of manual work, sorry.

The motivation here is JuliaLang/julia#41447, CC @KristofferC, @vtjnash. Can we get a 0.4.2 release soon?

[jkrumbiegel]

I don't understand, why not master? Release 0.4.2 on a separate branch and then continue on without these changes on master?

[timholy]

Right, these are needed to fix older releases of GridLayoutBase that still get used for package-compatibility reasons. master has already switched to @warnpcfail, so it doesn't need this change. (We could just delete @warnpcfail now, if you prefer, because Julia 1.7 will issue the warning automatically.)

So the steps are:

• git checkout v0.4.1
• git checkout -b release-0.4
• git push origin release-0.4

Then this PR can be merged into release-0.4. Either I can resubmit it or you can do a local git merge, let me know what you prefer.

[timholy]

One other tip: ideally you release 0.4.2 and then make a new 0.6.x release immediately thereafter. GitHub prints the "latest release" based on calendar date, not version number.

But that's just a secondary concern. Perhaps the more important thing to emphasize is that once Julia 1.7 comes out, anyone stuck for [compat] reasons on an older GridLayoutBase won't be able to build Makie unless you merge this and make this 0.4.2 release.

[timholy]

Closed in favor of #24, which is against a new release-0.4 branch.