0.4.0 release
add SUB ALL + ALL CALL functions (#16) breaking changes (sync with PCA9634 / 35) * add SUBADDR + CALL_ALL functions * rename reset() to configure() * add mode1 and mode2 parameter to configure() en begin(). * update documentation. * renamed PCA9685_MODE2_STOP to PCA9685_MODE2_ACK * minor edits