Add dynamic followers and motion profiles

This release adds dynamic followers and dynamic simple motion profiles.
These new dynamic motion profiles can be re-generated on-the-fly with
new constraints, so that they're constantly refreshing to achieve
maximum accuracy.

Fix a bug in the previous release

Add optimized motion profiles

This release adds optimized motion profiles for driving straight and
turning. The new profiles are neither extensively tested nor documented.

First stable release for v3.0.0 with docs

This is the first stable/useable release for version 3.0.0, with all
tools functional and complete JavaDocs.

Fix bugs with Moment facing methods

Improvements to TrajectoryGenerator, visualizer and TankDriveTrajectory

Add TrajectoryGenerator.generateRotationTank for easy generation of pure
rotation trajectories. Trajectory visualization tool now uses JSON
instead of CSV for saving trajectories (legacy support for CSV is still
kept). Add TankDriveTrajectory.isSmooth.

Introduce WaypointEx

WaypointEx inherits from Waypoint, so they can be used in place of a
regular waypoint, and allow an additional parameter specifying the
velocity.

Official stable release of version 2.1

Hotfix to an issue with TankFollower's error calculations

Introduce followers, as well as common interfaces for moments and tra…

…jectories, and various bug fixes