v0.2.0-alpha: First release

Added

• Login to any publicly accessible Speckle server
• Basic orbit, zoom and pan gestures for adjusting view.
• Adding and removing Speckle streams from the 3D environment.
• Objects in stream assigned a random color according to their SpeckleObject.Type value.
• UI inspired by Material design system.

Changed

• Based on a custom branch of SpeckleUnity v0.6.4-preview