[Haskell-cafe] [ANN] compact-sequences-0.2.0.0

[David Feuer]

I am pleased to release the second version of the compact-sequences
package, now with deques!

Changes:
* Add deques.
* Change operator precedence.
* Add a test suite. Thanks to David Himmelstrup for setting up the
test and CI framework.
* Clean up internals somewhat.
* Add a proof of amortized bounds for the stack implementation.
Thanks, Li-Yao Xia.

There are still plenty of things to work on, and help is always welcome.

David Feuer