Some initial work on riak
Uncomment crypto code
Fix imports, syntax
Yay, generative testing!
Move dev-only deps to a separate section
Add test.check dependency
Actually I mean optional-key
Manually install libsodium
Change defstep syntax to include param spec

This just looks way better.
Change get-schema to just take the step :type
Better error message for unsupported step types

This also removes one use of pr-str in the schema tests.

Closes #8.
Refs #2.
Master key -> seed key

This removes two issues with the term "master key":

- Slavery references.
- The implicit notion that the key forms a backdoor.
Merge branch 'master' into riak
r is configurable, w is computed
Add basic-quorum
Fix r=1
Move n-bytes prop out
Write store roundtrip test generatively
Slamhound
Add missing gen import