* Remove definitely unused attributes
* Refactor and remove unused attributes
* Add parentheses
* Prevent alt tag from having Liquid tags inside
* Add test
* Remove more unused attributes
* Scrub any valid attributes
* Remove unused tags and add more tests
* Remove <i> tag; <em> is used by parser
* Remove <center> b/c it's deprecated though still valid
* <cite> is a safe tag and used by some
* Eh I changed my mind about center lol
* Add underline <u> back in
* Don't allow width changes
* Use frozen constant for regex
* Use #remove over #gsub
* Create a new method that replaces <code> tags to
triple back ticks (```)
* Create unit tests for add_proper_code_tags method
* Rubocop fixes
* Change method name to one that is more descriptive/accurate
Fix method to allow for triple backticks, sameline code tags and multiline codetags in the same post/article
Fix test to match with method name change
* Fix rubocop offenses
* Fix Rubocop offenses
* Add additional assertions to make sure backticks are present
