ensure as_draws_rvars preserves dims of length-1 arrays, closes #265

[mjskay]

Summary

This closes #265 by ensuring that the dimensions of length-1 arrays in are preserved when converted to draws_rvars format.

@wds15 can you verify this solves the problems you had in OncoBayes2? Thanks!

Copyright and Licensing

By submitting this pull request, the copyright holder is agreeing to
license the submitted work under the following licenses:

• Code: BSD 3-clause (https://opensource.org/licenses/BSD-3-Clause)
• Documentation: CC-BY 4.0 (https://creativecommons.org/licenses/by/4.0/)

[codecov-commenter]

Codecov Report

Merging #268 (7d74707) into master (879bb0f) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #268   +/-   ##
=======================================
  Coverage   95.87%   95.87%           
=======================================
  Files          44       44           
  Lines        3343     3344    +1     
=======================================
+ Hits         3205     3206    +1     
  Misses        138      138           

Impacted Files	Coverage Δ
R/as_draws_rvars.R	100.00% <100.00%> (ø)

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more

[wds15]

Yes, I can confirm that the example I posted now works just fine with this fix in. Many thanks for fixing it! Looking forward to this getting on CRAN so that OncoBayes2 can be updated as well with a bumped version requirement on posterior.

[paul-buerkner]

Great! @mjskay merge whenever you like.

[mjskay]

Great! Thanks again @wds15 for all your thorough testing and bug reporting on rvar, it's really helped!

[wds15]

Oh... NP.. thanks for rvar ... I can echo "it really helps"!