Loggers -- could we factor them out to use with non-LVish software

[rrnewton]

I.e. use them from the IO monad (or possibly a monad transformer) when testing concurrent data structures.

This is somewhat related to #84

CC: @osa1 @alivaramesh

[peter-fogg]

I factored out the logging module and put it up at https://github.com/iu-parfunc/tslogger. There's a branch which depends on the new package here: https://github.com/iu-parfunc/lvars/tree/remove-logger

[rrnewton]

Cool, let's turn that into a pull request, make sure it passes tests, and then merge!

We should have some tests on the tslogger package that make sure its fuzz testing capability is still working. I added this as an issue on the tslogger repo: iu-parfunc/tslogger#2

So as soon as things are up and running well there, and we've merged the forthcoming remove-logger PR, let's close this issue.

[rrnewton]

Ok, we've still got the internal logger. We should merge this. Hopefully that code hasn't been touched so even though it's old it, the merge won't be hard. (CC @DreamLinuxer )

[rrnewton]

Finally merged this branch: d7c4c7b