* Simplifying HybRecord API
* Simplifying FoldRecord API
* Unifying settings information for argparse and modules
* Removing Support for ViennaD format
* Moving identifier-parsing code to module type_finder
* Moving target region analysis code to module region_finder
* Moving code for settings into a "settings" module
* Renamed HybRecord type_analysis and mirna_analysis to
eval_types and eval_mirna, respectively
to differentiate from analysis module functions
* Reimplemented analyses methods within a single Analysis class
* Added error checking / catching to HybFoldIter
* Removed Target-Region Analysis and associated files
due to lack of archival database information,
pending furure development
* Added "dynamic" seq_type to FoldRecord for non-identical fold/hybrid sequence handling
* Added shell implementation to all example pipelines
* Remove support for Python3.6, Python3.7
* Migrate to CircleCI for CI/CD
* Added Pytest unit testing integrated with CircleCI
* Other Misc. Improvements / Bugfixes