[TrelloBridge] Add new bridge

[Roliga]

Adds a new bridge for activity on boards and cards on the trello.com task management site.

[Roliga]

Hmm, private consts aren't allowed apparently. I'm not sure what the best way to include a large array of constants in a bridge is. Regular public const in the class? Make it a local (static?) variable in a function? Some tips would be appreciated!

[logmanoriginal]

Thanks for the PR!

Hmm, private consts aren't allowed apparently.

Yes, we still need to be compatible to PHP 5.6 which doesn't support private const. They were added in PHP 7.1: http://php.net/manual/en/language.oop5.constants.php

I'm not sure what the best way to include a large array of constants in a bridge is. Regular public const in the class? Make it a local (static?) variable in a function? Some tips would be appreciated!

Your solution using regular public const is best practice, they are immutable anyway and defined within the scope of your class.