Dependency injection support

[splinter89]

Resending #1164

[DavertMik]

Thanks! Finally I merged this and it is now in master branch
Waiting to get this working for 2.1!

[splinter89]

Here you go

[DavertMik]

@splinter89 thanks, I already merged this manually. Probably I will need to discuss some points. Are you in Skype these days?

[splinter89]

I already merged this manually

I don't see it.
Why don't you use this PR?

Yes, I'm in Skype every day at work, usually 10am-6pm.

[DavertMik]

@splinter89

I don't see it.
Why don't you use this PR?

Actually I did use this PR. This is how GitHub works, if PR can't be merged automatically it provides instructions to do that manually. Which actually I did. However it didn't track it. I merged your PR and I'm already working on moving everything to DI. I will push my changes to master later today.

Yes, I'm in Skype every day at work, usually 10am-6pm.
Am I using the wrong Skype or you are not replying? Ping me pls: davert.ua

[splinter89]

I rebased this branch on top of master so you can merge it automatically now.

[DavertMik]

Thank you, this branch is already merged. Di works really really smoothly on master and I feel really good of new features it brings! Thanks for good work!