Cdp-py

* Updated project documentation

* Added new Anchor Health V5 data item (0x014A)
* Added new Global Ping Timing Report V1 data item (0x014C)
* Added new Network Time data item (0x0149)
* Added new Deliver User Data V1 data item (0x010C)
* Added new Connection Report data item (0x0131)
* Added new Rx Stats CDP data item attribute
* Added new App Settings Chunk (0x0121)
* Added Image Discovery V1 (0x8009)

* Added new User Defined V2 (0x0148)
* Added the TimedRxV5 (0x802C)
* Added TickV4 (0x802D)
* Added PingV5 (0x802F)

* Added new CDP data items: 0x0135-0x0142

* Fixed issue with initializing a list attribute to its default value
* Added CDP Gyroscope Calibration (0x0130)

* Initial cdp-py public release