* Use ooni/probe-engine 0.16.0
* Update all the other dependencies
* Use GitHub Actions rather than Travis CI
* Automatically build and test binaries on the target OS (for Windows, macOS, Linux on amd64)
* Make sure we correctly measure coverage
* Make sure we use `-race` when running tests
* Remove unnecessary scripts
* Make sure the README is up-to-date
* Write small script to update binary data and add GitHub Actions checks for it
* Notice that we needed to run ./updatebindata.sh and run it
* Self documenting instructions regarding cross compiling
* Set version number to v3.0.7-beta
Part of https://github.com/ooni/probe-engine/issues/748
* Gopkg.lock: use MK v0.10.3
* ooni: stop using legacy GeoIP database files
* Some yak shaving of Makefile
1. remove now broken commands to download deps
2. also define the CXX cross compiler
* chore(dep): migrate from dep to go 1.11+ modules
See https://blog.callr.tech/migrating-from-dep-to-go-1.11-modules/
I need this to simplify my life in building for Travis.
* Introduce build.sh and repair build
In going forward, I believe we don't actually need a Makefile but I
didn't want to make such a radical change now.
* Another strategy wrt gopath
* travis: run regress tests on macOS
Closes#30
