Don't use NOW()... tisk tisk
Make the datePeriod object accessible
Speed up the month widget

Instead of 35 queries (1 for each rendered day), only use 1 query.
Add methods to get URLs without creating objects

This reduces the amount of memory and queries used.
Only use one insert query
Add a method to get the year's URL
Allow generating URLs for a year
Rather than creating objects to get URLs, just generate the URLs
Add type hints for generateURL methods
Add documentation
Change name of method to be more descriptive
add an @var PHPDoc
Make the current() function easier to read

calling the grandparent `\IteratorIterator::current()` was not that easily readable.
Merge pull request #30 from mfairchild365/speed

Speed improvements