Redvox

* Update the redvox-cli
* The CLI is now installed when this SDK is installed and available to the user as redvox-cli
* Added improved logging and error handling
* Added ability to download bulk RedVox data sets

* Add top level setter for mach_time_zero
* WrappedRedvoxPacket.set_mach_time_zero(self, mach_time_zero: int) -> 'WrappedRedvoxPacket'

* Add top level getters and setters for accessing time synchronization metrics stored in RedVox Packet metadata.
* WrappedRedvoxPacket.best_latency(self) -> typing.Optional[float]
* WrappedRedvoxPacket.set_best_latency(self, best_latency: float) -> 'WrappedRedvoxPacket'
* WrappedRedvoxPacket.best_offset(self) -> typing.Optional[float]
* WrappedRedvoxPacket.set_best_offset(self, best_offset: float) -> 'WrappedRedvoxPacket'
* WrappedRedvoxPacket.is_synch_corrected(self) -> bool
* WrappedRedvoxPacket.set_is_synch_corrected(self, is_synch_corrected: bool) -> 'WrappedRedvoxPacket'
* Add shortcut for adding metadata to a RedVox Packet (previously the entire metadata needed to be set at a time)
* WrappedRedvoxPacket.add_metadata(self, key: str, value: str) -> 'WrappedRedvoxPacket'

* Add mach_time_zero accessor to WrappedRedvoxPackets.
* WrappedRedvoxPacket.mach_time_zero(self) -> typing.Optional[int]

* concat._identify_gaps now only checks for dropped data from sensors. It checks for timing continuity by ensuring that the gap between packets is no larger than a configurable amount for a given sample rate.
* concat._identify_sensor_changes was added to identify sensor changes such as change in sample rate, change in sensor name, change in data type, or missing sensor data

* Added stat utils tests and updated function
* Edited documentation typos; 2.2.0 documentation still valid for 2.2.1