api: bump version to 1.4.0-dev
api: bump version to 1.4.0-dev

tsuru/tsuru,cezarsa/tsuru,ggarnier/tsuru,guilhermebr/tsuru,guilhermebr/tsuru,ggarnier/tsuru,ArxdSilva/tsuru,ggarnier/tsuru,guilhermebr/tsuru,ArxdSilva/tsuru,cezarsa/tsuru,tsuru/tsuru,ArxdSilva/tsuru,cezarsa/tsuru,ggarnier/tsuru,guilhermebr/tsuru,cezarsa/tsuru,tsuru/tsuru,tsuru/tsuru,ArxdSilva/tsuru