* Update SDK.
* Re-implemented the data retrieving logic based on async fetching and decoding mechanism to improve performance
* Add launch file for rplidar C1
* Update README
* Update Changelog

[new feature] support baudrate 57600 and 1382400, support HQ scan response
[bugfix] TCP channel doesn't work
[improvement] Print warning messages when deprecated APIs are called; imporve angular accuracy for ultra capsuled scan points