Add Exclude filters and other input options

[AutonomicPerfectionist]

Is this pull request associated with an issue(s)? Fixes #66

Description This PR adds several new input options to control what files and directories are documented.

TODOs

• [x] Add exclude filters using simple glob syntax
• [x] Add an option for auto excluding directories without CMake files
• [x] Add an option to follow symlinks in recursive mode
• [x] Add tests for new options

Optional

• [x] Add support for more complex ignore filters, using syntax similar to .gitignore files
• [ ] Add support for external .cminxignore files

[codecov[bot]]

Codecov Report

Merging #97 (b8d17e8) into master (c77a096) will increase coverage by 0.30%. The diff coverage is 96.25%.

@@            Coverage Diff             @@
##           master      #97      +/-   ##
==========================================
+ Coverage   95.68%   95.99%   +0.30%     
==========================================
  Files           6        6              
  Lines         765      799      +34     
==========================================
+ Hits          732      767      +35     
+ Misses         33       32       -1     

Flag	Coverage Δ
unittests	95.99% <96.25%> (+0.30%)	:arrow_up:

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
cminx/rstwriter.py	98.25% <92.85%> (ø)
cminx/__init__.py	93.19% <96.49%> (+1.74%)	:arrow_up:
cminx/config.py	100.00% <100.00%> (ø)
cminx/documenter.py	99.11% <100.00%> (+0.88%)	:arrow_up:

---

Continue to review full report at Codecov.

Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update 46241e6...b8d17e8. Read the comment docs.

[AutonomicPerfectionist]

@ryanmrichard this one should be ready for review now. I decided against adding support for .cminxignore files as putting the exclusion filters in the configuration files should suffice. Let me know if you want me to add that

[ryanmrichard]

🚀 [bumpr] Bumped! New version:v0.1.1 Changes:v0.1.0...v0.1.1