added plot_decay_heat method #40

	name: CI

	on:
	pull_request:
	branches:
	- develop
	- main


	jobs:
	testing:
	runs-on: ubuntu-latest
	container:
	# could use last stable image
	# image: openmc/openmc:v0.13.1
	image: openmc/openmc:develop
	steps:
	- name: Checkout repository
	uses: actions/checkout@v2

	- name: install package
	run: \|
	pip install .
	python -c "import openmc_depletion_plotter"

	- name: run tests
	run: \|
	pip install .[tests]
	pytest tests -v

	- name: run examples
	run: \|

	python examples/activity_atoms_vs_time/simulate_silver_depletion.py
	python examples/activity_atoms_vs_time/plot_activity_vs_time.py
	python examples/activity_atoms_vs_time/plot_atoms_vs_time.py

	python examples/isotope_charts/plot_isotope_charts.py
	python examples/isotope_charts/plot_multiple_isotope_charts.py

	# skipped these intensive examples
	# simulate_fission_actiation.py
	# plot_isotope_charts_fusion_irradiation.py
	# plot_isotope_charts_fisson_irradiation.py

	python examples/pulse_schedule/plot_pulse_schedule.py
	python examples/decay_heat_vs_time/decay_heat_vs_time.py

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