Revert the reimplementation of TBQueue

[nikita-volkov]

Revert the reimplementation of TBQueue

[bgamari]

Yes, I can roll-back.

FWIW, I agree that we need better testing; it has long been concerning to me that such a subtle system as STM has as little testing infrastructure as it does.

[bgamari]

I have released 0.5.3.0 with the TBQueue rewrite reverted.

@konsumlamm , perhaps you would like to have a stab at improving stm's testsuite and then trying your change again?

[konsumlamm]

I'd recommend adding property tests (e.g. using QuickCheck). While we're at it, we can also replace test-framework by tasty (which is more actively developed).

Currently there are two test suites, one in tests/ and one in testsuite/. It seems tests/ is just for GHC? It would be nice to unify the two.

[TeofilC]

Another way forward might be to start off with the new implementation as a TBQueue.Experimental variant or something like that and only replace the old version with it after a while has passed and we've worked out the kinks

[simonmar]

We should probably roll it back until we have better testing. @bgamari would you be able to do that?

[bgamari]

Reverted in #80.

[nikita-volkov]

Thank you! Can we also deprecate 2.5.2.0, 2.5.2.1 on Hackage since they are buggy?