A first pass at creating a function to render a law as plain text

This is entirely untested, not even run a single time. Per #160.
Fix invalid section ID reference
Turn newlines into carriage returns

 Supports #167. I filed a new ticket, #205, as a reminder that this
should really be replaced with code to encapsulate paragraphs within P
tags.
Rewrap comment text
Edit and clean up comments and comments' style

Moving towards closing #170.
Be verbose with errors during the parsing process
Remove unnecessary text
Fix broken API call

For whatever reason, the API class isn't being autoloaded here, so
explicitly include that file. I've opened #204 to address this.
Include the site's URL in the API registration
Make the API key instructions more verbose
Move core variables into the class scope (within $this)
Make conditional the inclusion of order_by
Eliminate unnecessary scope adjustment
Edit, reformat, and standardize comments

Per #170.
Don't use a static function

Towards #167.
Require several variables in order to recurse

Towards #167
Improve definition parsing
Updated with v0.6 notes
Change dictionary date type
Handle an array more judiciously

Explicitly establish the array, and then handle it differently,
depending on the number of elements within it.