[Idea] Use Component instead of std::unique_ptr for members

[mrzzzrm]

Pros:

• less typing Component only has 9 letters, std::unique_ptr has 11
• More semantics. std::unique_ptr could be anything, a component is a compositional element of a class
• Less typing in initializier lists, no new ClassName(arg1, arg2), just arg1, arg2
• No typing at all in initializer list, not even member name, if the class takes no args.

Negs: * _this references in initializer lists need to be passed like std::ref(_this) instead of *this.

Please tell me what you think about this asap and I will implement it everywhere and extend the Component class with const getters and stuff.

[xchrdw]

looks good

[gersseba]

I like the init list. :+1:

[psieg]

If I don't even need the ref, I'm up

[mrzzzrm]

will implement and reopen