use the cargo command directly instead of a useless wrapper action

update the build status badge

use a different github action for uploading to GH pages

fix a link in the docs

don't install SDL2 in the documentation action

replace Travis CI with Github Actions

update Travis badge in README

update dependencies to trigger a rebuild on CI

fix clippy and rustfmt warnings

add formatting checking and linting to CI

fix Travis CI warnings

restore Cargo.lock from commit 824fb288e75e91cab6ec4161c73fe522386e8ea6

fix Travis CI

Merge pull request #11 from sidju/master

Add option for looping all algorithms in series indefinitely