Checking IDate, Adding CmdStan Requirements, CmdStanR argument completion

[medewitt]

This PR resolves

• an esoteric bug where some of the pre-processing code expects a class of IDate and when presenting with a Date class fails oddly.
• Adds the system requirement for CmdStan
• Bumps version to dev
• Uses full argument name for one of the the CmdStanR functions (include_paths) to clear console of argument completion warning
• Updated NEWS

[seabbs]

Thanks for this @medewitt this looks good. Just flagging that I have seen this, appreciate it, and will look at it in more detail at the earliest opportunity. Pretty slammed with Omicron related work at the moment so this is having to take a back seat.

[codecov]

Codecov Report

Merging #26 (957f9bd) into main (2ec15a9) will not change coverage.
The diff coverage is 0.00%.

❗ Current head 957f9bd differs from pull request most recent head 1b22d9f. Consider uploading reports for the commit 1b22d9f to get more accurate results

@@          Coverage Diff          @@
##            main     #26   +/-   ##
=====================================
  Coverage   0.00%   0.00%           
=====================================
  Files         13      13           
  Lines        638     642    +4     
=====================================
- Misses       638     642    +4     

Impacted Files	Coverage Δ
R/model.R	0.00% <0.00%> (ø)
R/preprocess.R	0.00% <0.00%> (ø)

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[seabbs]

This looks great, thanks @medewitt! I just fixed a few spacing issues. Would you like to submit another PR with your contributor details?