BlenderProc 2.7.0

• upgrades to blender 3.5.1 (#788)
• adds helper methods for easy 3D-2D projection/unprojection, including bproc.camera.depth_via_raytracing(), bproc.camera.pointcloud_from_depth(), bproc.camera.project_points(), bproc.camera.unproject_points(), see also point_cloud example (#1045)
• removes support for obsolete .yaml configuration files (#962)
• speeds up bop writer for large number of objects - for 300 objects, the bop writer execution time reduces from 60s to 12s with 8 cores (#996)
• adds warning if hidden objects are given to bop writer (#998)
• skip transparent cc materials per default (#1004)
• rework of duplicate(): allows linking and keeps parent relative transformation matrix (#1012, thanks @AndreyYashkin)
• moves hide() and is_hidden() to Entity class (#1015, thanks @AndreyYashkin)
• fixes optical flow output key being overwritten by RGB (#963)
• fixes --custom-blender-path on windows (#972)
• adapts downloading cc_textures to new naming scheme (#976, #993)
• fixes issue in light projector (#995, thanks @beekama)
• fixes skipping annotation indices when appending coco annotations (#1024)
• fixes frame offset in rendering progress bar (#1038, thanks @burcam)