275 create comment

[jmbarbone]

Closes #275

• Makes changes to parameter checking to allow for integers (as documented)
• Updates docs to be clear on how height and width should be entered
• Adds checking for single values and removes the lines that grab the first values of height, width without error/warning
• Simplifies other checks for comments
• Adds unit testing

[codecov-commenter]

Codecov Report

Merging #276 (12ccc5a) into master (50495e4) will increase coverage by 0.05%.
The diff coverage is 78.57%.

@@            Coverage Diff             @@
##           master     #276      +/-   ##
==========================================
+ Coverage   66.30%   66.36%   +0.05%     
==========================================
  Files          34       34              
  Lines        8935     8936       +1     
==========================================
+ Hits         5924     5930       +6     
+ Misses       3011     3006       -5     

Impacted Files	Coverage Δ
R/asserts.R	72.09% <75.00%> (+6.37%)	⬆️
R/CommentClass.R	46.05% <83.33%> (+1.47%)	⬆️

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[JanMarvin]

As usual, only minor nitpicking - otherwise looking good!

[JanMarvin]

Thanks, merged!