Rqlite

- [PR 185](https://github.com/rqlite/rqlite/pull/185): Enable foreign key constraints by default.

- [PR 175](https://github.com/rqlite/rqlite/pull/175): Simplify error handling of Update Peers API.
- [PR 170](https://github.com/rqlite/rqlite/pull/170): Log any failure to call `Serve()` on HTTP service.
- Go lint fixes.
- Go cyclo complexity changes.

- [PR 159](https://github.com/rqlite/rqlite/pull/159): All HTTP responses set X-RQLITE-VERSION.

- [PR 151](https://github.com/rqlite/rqlite/pull/151): Support configurable Raft heartbeat timeout.
- [PR 149](https://github.com/rqlite/rqlite/pull/149): Support configurable Raft snapshot thresholds.
- [PR 148](https://github.com/rqlite/rqlite/pull/148): Support pprof information over HTTP.
- [PR 154](https://github.com/rqlite/rqlite/pull/154): CLI now redirects to leader if necessary.
- [PR 155](https://github.com/rqlite/rqlite/pull/155): CLI now handles "no rows" correctly.

- [PR 143](https://github.com/rqlite/rqlite/pull/143): Use DELETE as HTTP method to remove nodes.

- [PR 142](https://github.com/rqlite/rqlite/pull/142): Use correct HTTP methods on all endpoints.
- [PR 137](https://github.com/rqlite/rqlite/pull/137): Use resolved version of joining node's address.
- [PR 136](https://github.com/rqlite/rqlite/pull/136): Better errors on join failures.
- [PR 133](https://github.com/rqlite/rqlite/pull/133): Add Peers to status output.
- [PR 132](https://github.com/rqlite/rqlite/pull/132): Support removing a node from a cluster.
- [PR 131](https://github.com/rqlite/rqlite/pull/131): Only convert []byte from database to string if "text". Thanks bkeroackdsc
- [PR 129](https://github.com/rqlite/rqlite/pull/129): Verify all statements sent to query endpoint begin with "SELECT".
- [PR 141](https://github.com/rqlite/rqlite/pull/141): Store methods to expose node Raft state. Thanks bkeroack