Initial pass at WP-CLI integration
It helps to add ALL files...
Merge pull request #2470 from ghost1227/feature/wp-cli

Feature/wp cli
More class-edd-cli.php to normal includes dir. #1919
Add class file
Tweak product stats. #1919
Remove currency filters
Tweak how prices are display. #1919
Fix price display. #1919
Add backin currency sign. #1919
No need for extended product details to be in verbose mode only. #1919
Show the price assignment for download files. #1919
Add double space. #1919
Simplify get_products. #1919
Check that categories is array before looping through. #1919
simplify customers. #1919
Make it more clear what the ID refers to. #1919
Simplify get_sales(). #1919
Remove extra (invalid) arg. #1919
Remove verbose and raw notes. #1919