Added projection ray blaster & options for periodic blaster/scene #36

	name: Run tests

	on: [push]

	jobs:
	build:

	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: [3.6, 3.7, 3.8]

	steps:
	- uses: actions/checkout@v2
	- name: Setup conda
	uses: s-weigand/setup-conda@v1
	with:
	update-conda: true
	python-version: ${{ matrix.python-version }}
	conda-channels: anaconda, conda-forge
	- name: Install dependencies
	run: \|
	conda install -n=base pyembree numpy cython
	source activate base
	pip install -U pip
	pip install -r requirements.txt
	pip install -r requirements_dev.txt
	pip install -e .
	- name: Pytest
	run: \|
	source activate base
	pytest

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