Add MongoDB appender
Cleanup
Add more default keys, allow setting write-concern
Simplify README
Add `before-run`, `after-run` Expectations fns
Add `codox` lein alias
Lein :warn-on-reflection -> :global-vars
Bump dependency (clj-stacktrace 0.2.6)
Remove restriction on :throwable, default to all but :ap-config
Merge branch 'mongo' of github.com:emlyn/timbre into emlyn-mongo
Merge branch 'emlyn-mongo'