GitFilterSafeHandles for the win
Remove gate
Clean up tests

Conflicts:
	LibGit2Sharp.Tests/FilterFixture.cs
remove console.write
:lipstick:
custom check callback
hard cor tests

Conflicts:
	LibGit2Sharp.Tests/FilterFixture.cs
Apply callback

Conflicts:
	LibGit2Sharp.Tests/FilterFixture.cs
Custom shutdown callbacks
init tests
Dont worry about pinnin anything
Clean up custom callbacks
remove consoles
Test clean up