* chore: run github actions on windows too

* chore: don't look for a runner that is both windows AND linux

* chore: tell windows to run script through bash

* build: refactor npm scripts and create a windows-specific CI step

* chore: correct script name

* chore: swap order of build and test steps

* chore: explicitly run script with bash

* chore: skip download of non-windows binaries on windows CI

* chore: improve logging in download script

* chore: make shellcheck pass

* chore: unroll loop to see if runner is happier

* debug: add extra logging info for ffi download

* chore: try .dll.lib for windows

* chore: rename SCRIPT_DIR to LIB_DIR so scripts dont stamp each other

* debug: add extra printout during download

* chore: make ffi directory if it doesn't exist

* chore: add debug logging to bash lib

* chore: commit ffi README.md

* chore: correct test

* chore: try dll again now that the files are actually downloading

* chore: don't download unnecessary dll.lib for windows

* chore: dont test for binaries that we don't expect to be present

* build: prevent releases if only the windows binaries are included

* chore: move ONLY_DOWNLOAD_PACT_FOR_WINDOWS environment variable to build step instead of sub-script

* chore: remove appveyor.yml