Consistently use NULL as "empty" return type rather than FALSE.

[maikelRAOW]

One such example is "getParent". In PostModel it will return null if no parent is set, but in TermModel it will return false if no parent is set. I think it would be better to stick with null over false as "empty" type to avoid type mixing.

However, this change has potential to cause issues in existing projects.

[dseegers]

@maikelRAOW

Maybe it's not something to judge but just wanted to pass it on :).

Inside the ComponentRepo, App(.php), RouteManager all basic exceptions are thrown.

Wouldn't it be nice to extend these from a base exception and specify them out, making them less generic: for example a component exception, route exception, etc. Here you can later choose to do something with these exceptions, otherwise, you will catch everything at once.

[ChrisRAoW]

@dseegers Good suggestion mate!