[go] Fetch binary conversion exercise
[go] Implement first passing version for binary conversion

*Really* gross, but I wanted to get the tests passing.
[go] Clean up binary conversion function

I don't like all of the the type conversions, but I"m unfamiliar enough
with Go's type system to not know of a better way.

Submission: http://exercism.io/submissions/143481f9e4d8f738cd64bba4
[elixir] Fetch list-ops exercise
[elixir] Implement ListOps.count w/ passing tests

The main takeaway is using the `do_x` set of private helper functions as
is idiomatic with Elixir, establishing one function clause as a base
case and then building up from there.