GitLab

* support alpha for both marching and rendering; relax pytorch requirement

* bump version

* Support python 3.7

* Add dependency

* update docs for ray gradients

* update pdf

* zeros -> emtpy in cuda

* disable cuda hint if is been built

* update examples with better perf

* bump version to 0.2.0

* update readme

* update index and readm

* clean up doc

* add distortion loss

* update init

* bump version

* new utils

* proper test for pack

* add test por cdf and query occ

* add deprecated warning

* bump version

* fix list return to tuple

* fix rendering alpha_thre to 0 by default

* bump version

* new logo

* size

* larger logo

* new logo

* size

* update requirements

* fix RTD requirements

* more organized version

* add copyrights

* proper versioning

* proper versioning

* cleanup project; read version from pyproject

* read version from pyproject

* update weblink

* cleanup nerfacc file structure

* propoer test contraction

* proper test for intersection

* proper tests for pack, grid, and intersection

* proper testing for rendering

* bug fix

* proper testing for marching

* run check reformat

* add hints on nvcc not found

* add doc to readme

* resume github check

* update readthedocs env

* rm tool.setuptools.packages.find

Co-authored-by: Xiaoming Zhao <xmzh@fb.com>