Brings PyTorch 2.1 support

New feature

• Implicitron: Integral Position Encoding, blurpoo; based on MIP-NeRF https://github.com/facebookresearch/pytorch3d/commit/ccf860f1db38b839db9dcde206b6b5091ac50385 https://github.com/facebookresearch/pytorch3d/commit/29b8ebd80206d729e80264662519f7ab168f046e https://github.com/facebookresearch/pytorch3d/commit/5910d81b7bec2e8d328a8d4e1435e1041c9921a7 https://github.com/facebookresearch/pytorch3d/commit/3d011a9198a041bee93d16f42872b797b48be67b https://github.com/facebookresearch/pytorch3d/commit/9446d91fae56dd86b1f58d106360aab4491a0b2a
• Chamfer distance: single-direction option, absolute option https://github.com/facebookresearch/pytorch3d/commit/5ffeb4d580f5c7043ed1691e49d2d99f0f655bbc
• Chamfer without point reduction https://github.com/facebookresearch/pytorch3d/commit/d84f274a0822da969668d00e831870fd88327845
• VolumeSampler: expose padding_mode for inside out rendering https://github.com/facebookresearch/pytorch3d/commit/b7f4ba097cebab303471119fdaac97b50a72e7d0

Implicitron improvements

• Softly deprecate the get_str=False flag in stats.print. https://github.com/facebookresearch/pytorch3d/commit/d08fe6d45a537d6d57d704c37d33ae01359a029a
• FrameDataBuilder is more extensible https://github.com/facebookresearch/pytorch3d/commit/b0462598ac59ba01c9866a3268f9c0da44d62456
• SQLDataset improvements https://github.com/facebookresearch/pytorch3d/commit/d2119c285fa00438de168e17f8a453681dbed4d3 https://github.com/facebookresearch/pytorch3d/commit/09a99f2e6d9164066ca78aaebe4c9a811ab5fbb9 https://github.com/facebookresearch/pytorch3d/commit/cd5db076d5c849494b86e9404f2a30ff5aa7f0e8
• OverfitModel’s fine and coarse implicit functions have the right names https://github.com/facebookresearch/pytorch3d/commit/35badc0892275c35818ca39800ec55d9c7342c8f
• Read depth maps from OpenXR files using OpenCV https://github.com/facebookresearch/pytorch3d/commit/d851bc3173550197c588f5887d89677632faafdb

Minor

• matplotlib compatibility https://github.com/facebookresearch/pytorch3d/commit/928efdd640358d3affcf493c4311b85350ea1103 https://github.com/facebookresearch/pytorch3d/commit/5592d25f68939767c1580241cbf4e7fa6040364e https://github.com/facebookresearch/pytorch3d/commit/88429853b932471cfdfefd259855d6b8a23aa7c3
• Implicitron: fg_mask/fg_probability typing fix https://github.com/facebookresearch/pytorch3d/commit/8164ac4081d574e4e3f55a18fc7fb12389c144f1