Add L5.5 support

[MCMatters]

Please review

[sagargulati]

All checks passed! Can you update the repository? So that we can pull the new drivers and the repo? @jenssegers

[ghost]

@sagargulati @jenssegers All checks pass because this just removes lot of assertions from tests, see EmbeddedRelationsTest.php. I'm not sure if this really is the PR we're all hoping for. You can't make things pass the test by simply removing failing assertions.

[MCMatters]

@ciruvan I only removed events from dispatcher because there is a new "retrieved" event which cause problems with tests. I didn't work with Mockery, but I saw in @RemiCollin PR how it can be handled. I updated code, thanks to RemiCollin

[sagargulati]

So this is good to go now @MCMatters
Yes, I saw that but a minor bug may help ascertain for a final PR @ciruvan

[SimplyCorey]

Awesome work dude, thank you.

[ghost]

@MCMatters nice work, man! if that PR is accepted by @jenssegers, I owe you one!

[ConorWright]

Good job! I've just upgraded to 5.5 and all I'm waiting on is this. Looking forward to it!

[aashari]

Thankyou so much @MCMatters this is the solution for all of us, thankyouu... now we're waiting PR accepted by @jenssegers :)

[sagargulati]

@jenssegers , when should we expect you will accept the PR by @MCMatters ? :)

[sagargulati]

Shouldn't someone update README.md as well? :)
Also still getting an error of Hybrid Relations. Check #1282 @jenssegers?

[MCMatters]

@sagargulati where exactly do you have an error?

[sagargulati]

It's was on belongsToMany. I am using Alpha now and seems it working fine.