Bump master to 1.18.99

[TysonStanley]

Now that 1.18.0 is on CRAN, we are bumping master to 1.18.99.

[MichaelChirico]

Thanks! Be sure to add the tag for 1.18.0 as well

[TysonStanley]

Thanks, I did tag it but it isn't showing up on GitHub. Investigating why, will redo if necessary.

[codecov]

Codecov Report

❌ Patch coverage is 83.78378% with 12 lines in your changes missing coverage. Please review.
✅ Project coverage is 98.97%. Comparing base (e455714) to head (8073130).
⚠️ Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
src/init.c	83.78%	12 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #7513      +/-   ##
==========================================
- Coverage   99.04%   98.97%   -0.07%     
==========================================
  Files          87       87              
  Lines       16707    16740      +33     
==========================================
+ Hits        16547    16568      +21     
- Misses        160      172      +12     

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[github-actions]

• HEAD=cran-1.18.0 stopped early for DT[by,verbose=TRUE] improved in #6296
• HEAD=cran-1.18.0 stopped early for DT[,.SD] improved in #4501
  

Generated via commit 8073130

Download link for the artifact containing the test results: ↓ atime-results.zip

Task	Duration
R setup and installing dependencies	5 minutes and 17 seconds
Installing different package versions	11 minutes and 42 seconds
Running and plotting the test cases	4 minutes and 21 seconds

[aitap]

The 1.18.0 tag is visible now.

[aitap]

This seems to be missing the singular forms of the translated messages from the Pl_ macro. @MichaelChirico, what's the right xgettext call to capture them?

[aitap]

Did you apply a C source formatter or perform the changes manually?