Brainflow

In one of dependencies we use for MacOS signing cert expired or smth else happend. As a result MacOS didnt load this library. Should be fixed now

Changes in this release:

* add check that Cyton board is enabled in prepare_session method
* fix sampling rate for Ganglion, now its finally 200
* no packet loss for Ganglion

Changes in this release:

* Support for Callibri device
* add serial_number field to BrainFlowInputParams

[More info](https://brainflow.ai/2020-05-23-new-major-version/)

Changes in this release:

* Load default settings for Cyton based boards in prepare_session method
* Fix accel values for Cyton and Ganglion
* Add get_resistance_channels method
* Add support for impedance values for Ganglion and Ganglion WIFI
* Fix linux32 issues in bindings
* Add more data to synthetic board

Changes in this release:

* fix Java MacOS issue with SIP
* add more data to Synthetic Board
* return raw data from BrainBit instead preprocessed