v0.2.2

What's Changed

• Fixed the sign for particles 'j' (in each pair i-j) contributions in the open-boundary grand mobility by @torrewk in #45
• Added a GUI with 3d trajectory visualizer by @torrewk in #46
• Added checks for overlapping particles at each time step and changed RFD wrapping of particle positions by @torrewk in #47

Full Changelog: v0.2.1...v0.2.2