remove underscores from method names
fixes https://github.com/Eluinhost/TeamspeakAuth/issues/64
fixes https://github.com/Eluinhost/TeamspeakAuth/issues/66
fixes https://github.com/Eluinhost/TeamspeakAuth/issues/67
fixes https://github.com/Eluinhost/TeamspeakAuth/issues/65