v0.2.0

• New tool, ser4010_si443x, for transmitting to a Si443x based receiver
• New function for easy transmitter configuration: ser4010_config()
• New functions to identify device: ser4010_get_dev_type(), ser4010_get_dev_rev()
• New functions to change data encoding: ser4010_{get,set}_enc()
• Updated ser4010_dump to print device information and encoding. This breaks
  compatibility with old firmware
• Removed ser4010_reconfigure() as configuration is done automatically
• Changed default FSK deviation
• Small fixes and documentation changes