Roadmap to v0.3.0

[Jiayuan-Gu]

v0.3.0 will include new features:

• add 2 more soft-body tasks: Pinch and Write
• add 4 mobile manipulation tasks migrated from ManiSkill
• add PickClutterYCB-v0 (picking the target object from a clutter of objects)

The estimated release date is mid-October. Stay tuned.

Besides, we are finalizing our new system which greatly improves GPU memory utilization in the environments and enables massive parallelization (e.g., collecting samples with a CNN at 2000 FPS with 1 GPU and 16 cores).