Add show_messages and show_exceptions arguments to all methods

[andrjohns]

Submission Checklist

• Run unit tests
• Declare copyright holder and agree to license (see below)

Summary

Closes #884 by adding the new show_messages and show_exceptions arguments to all fitting methods

Copyright and Licensing

Please list the copyright holder for the work you are submitting
(this will be you or your assignee, such as a university or company):
Andrew Johnson

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

All modified and coverable lines are covered by tests ✅

Comparison is base (5ae46d3) 88.36% compared to head (e0816e1) 88.37%.

❗ Current head e0816e1 differs from pull request most recent head 00ca320. Consider uploading reports for the commit 00ca320 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #897      +/-   ##
==========================================
+ Coverage   88.36%   88.37%   +0.01%     
==========================================
  Files          12       12              
  Lines        4530     4535       +5     
==========================================
+ Hits         4003     4008       +5     
  Misses        527      527              

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[rok-cesnovar]

Awesome!

[jgabry]

Nice, thanks!