roll version to v0.5.1
roll version to v0.5.1

toastythought/rpgboss,hendrik-weiler/rpgboss,lefay1982/rpgboss,hendrik-weiler/rpgboss,toastythought/rpgboss,rpgboss/rpgboss,DrDub/rpgboss,DrDub/rpgboss,rpgboss/rpgboss,lefay1982/rpgboss