V 0.9.9 Release

Thank to @oleksiikutuzov for his work on EEPROM code:

• Add EEPROM function to remember last used voltage/current and PD mode settings.

Other bug fix:

• Change Startup PPS to be Corse #issue #17
• Fix quickly turning the encoder makes the power supply not delivering the set voltage. #issue #11
• Fix Voltage selection bug near 3.3V #issue #3