Template Inline Docs for shortcode-login.php

I think a few templates need some inline documentation, like this template for example. Just a thought.
Template documentation for history-downloads.php
Template documentation for history-purchases.php
Template Documentation for shortcode-register.php
Fixing template doc for history-purchases.php

Small wording fix.
Template Documentation for widget-cart.php
Spacing for template docs in widget-cart.php

Small spacing fix
Template Documentation for checkout_cart.php
Fixing template docs for checkout_cart.php
Merge pull request #2762 from NikV/master

Template Inline Docs for Templates folder
Add GPL badge
Update readme.md
Update readme.md
Extra argument for price option amount filter

Price id should also be passed to this filter
Extra arg to edd_complete_download_purchase filter

This is addition to Software Licenses plugin so it can save order of
each download item in the cart
Merge pull request #2775 from somewebmedia/Enhancement/filter-price-amount

Extra argument for price option amount filter
Changed $cart_order to $cart_index
Merge pull request #2776 from somewebmedia/enhacement/download-cart-order

Extra arg to edd_complete_download_purchase filter
Scrutinizer for code coverage
Update .scrutinizer.yml