Move geom-* specific code to geom-*.R class definition

[lazycipher]

So far I've moved the following geom class definitions:

• abline
• point
• text
• ribbon
• bar
• violin, etc

[lazycipher]

Hi @tdhock, I've made some changes, can you review, please?

[tdhock]

the design looks more reasonable. so you have export_animint in the main Geom, which calls geom-specific pre_process methods?
why is the build failing?
why do you want to merge into r4-fixes? shouldn't you merge into master?

[lazycipher]

Yes right!
The build is failing because of that gist test.
Actually I thought I should be working on this branch and then merge to r-4-fixes and when you'll be back, we'll have just to merge r-4 fixes to master.

Please let me know if you want me to close this PR and create a new one on the master branch.

[tdhock]

can you please close this PR, then open a new PR from tdhock:geom-oop to tdhock:master

• creating the branch in tdhock repo should resolve the gist fail issue
• merging to master is what you should do in almost every PR

[lazycipher]

I got it! I'll do this!
Thank you so much!