* update channel arg names, add compression level arg support, add compression level arg test
* switch to temp test demonstrating bug in grpc 0.15.0
* memset op array to 0
* switch examples back
* Switch to newer `grpc` and enable tests in `release.nix`
* Split out `simple-server` test into separate shell script
* Fix bash invocation
* Add intermediate `./default-tests.nix` build
* Add `tests.patch` to version control
* Split `python` command into separate script
* Provide `python` via `nix`
We now have Jenkins enabled for `gRPC-haskell` which verifies that
`nix-build release.nix` passes for each pull request.
`master` currently doesn't build, and this is the first pull request to fix the
build by adding the recently introduced `sorted-list` dependency to the `nix`
build. This was done by running `cabal2nix . > default.nix` and also adding a
newer version of `sorted-list` to the `release.nix` file. `nixos-16.03`
uses an older version of `sorted-list` which doesn't have an `IsList` instance for
`SortedList`.
