3.0.0
- Initial Release

3.0.1
- Document fix

3.0.2
- More error text in driver

3.0.3
- Add pulse gpio function

3.0.4
- Add pwm gpio function

3.0.5
- Fix bug pwm at 0% and 100%

3.0.6
- Add more accurate pulse and pwm functions (may result in higher CPU usage)
- Add pulse_rt_gpio and pwm_rt_gpio functions
- Pulse pulse_rt_gpio is in us
- Add accurate pwm max frequency FREQ_MAX_RT (50kHz)