Add checking in sub params() that the parameters are valid, either em… #24

	name: linux

	on:
	push:
	branches:
	- '*'
	tags-ignore:
	- '*'
	pull_request:

	jobs:
	perl:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	perl-version:
	- '5.10'
	- '5.16'
	- 'latest'
	container:
	image: perl:${{ matrix.perl-version }}
	steps:
	- uses: actions/checkout@v2
	- name: perl -V
	run: perl -V
	- name: Dependencies
	run: cpanm --quiet --installdeps --notest .
	- name: Tests
	run: prove -lr ./t

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