3.7.0

Bugs:

• Use composer phpunit #446
• Call is_resource() before fclose() #457
• Return microtime as a float #461

Enhancements:

• Deleting files should use the stored base path if available. #410
• You now have a deleteCallback option to delete additional files on record deletion #454

Documentation:

• Updated code examples to working code for 3.4 #445
• Removed extra <?php declaration #449
• Filepath comments #450
• Update examples.rst #455