Third Alpha release

Much simplified build_tarballs.jl structure. Initial support for musl linux and FreeBSD. Greatly enhanced OSX C++ support. Lots of little fixes and compatibility checks, including detection of encrypted disk mounts.

Second Alpha release

This release greatly simplifies build_tarballs.jl scripts and goes hand in hand with the latest and greatest BinaryProvider changes.

Initial Alpha release

Initial alpha release of BinaryBuilder