Add get_active_kernel() function to Python Interpreter and use it to fix some plotting issues on newer versions of matplotlib #302

1A30

	name: Build 2.12

	on:
	push:
	branches:
	- master
	pull_request:

	jobs:
	build:

	runs-on: ubuntu-20.04

	steps:
	- uses: actions/checkout@v2
	- uses: actions/setup-python@v2
	with:
	python-version: '3.10'
	architecture: 'x64'
	- uses: actions/setup-java@v1
	with:
	java-version: 8
	architecture: x64
	- name: Build
	run: \|
	echo "Setting up Python dependencies"
	pip install -r ./requirements.txt
	jep_site_packages_path=`pip show jep \| grep "^Location:" \| cut -d ':' -f 2 \| cut -d ' ' -f 2`
	jep_path=${jep_site_packages_path}/jep
	jep_lib_path=`realpath ${jep_site_packages_path}/../../`
	export LD_LIBRARY_PATH=${jep_path}:${jep_site_packages_path}:${jep_lib_path}:${LD_LIBRARY_PATH}
	export LD_PRELOAD=${jep_lib_path}/libpython3.so

	pushd $GITHUB_WORKSPACE
	sbt 'set scalaVersion := "2.12.12"' test
	popd

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