Rely on just-in-time translation loading

[swissspidy]

What?

Removes the manual load_plugin_textdomain() call to rely on WordPress to load translations at the right time.

Bumps the requirement to WordPress 4.6 accordingly.

Also, defines the Requires * headers in the main plugin file so that WordPress can actually read them and prevent you from installing the plugin if requirements are not met.

The headers mustn't really be set in the readme.

Why?

The plugin was loading translations too early on plugins_loaded. Plugins should wait until init to ensure the current user has been set up, so that the current user's locale can be respected.

That said, why manually load translations when WordPress can do it for you :-)

How?

Testing Instructions

Switch to a different language and see that the translations are still loaded as expected.

Screenshots or screencast

Changelog Entry

Fixed - Ensured translations are only loaded just-in-time.

[kasparsd]

This is great, thank you so much!