Merge branch 'release/0.2.13' into develop
lein-release plugin: bumped version from 0.2.13 to 0.2.14-SNAPSHOT for next development cycle
json changes
Merge pull request #18 from racehub/feature/json_fixes

let json return custom failure codes
lein-release plugin: preparing 0.3.0 release
Merge branch 'release/0.3.0'