Manage common tasks with OpenAL applications

Current version

alure requires the following formulae to be installed:
pkg-config 0.29.2 Manage compile and link flags for libraries
cmake 3.11.1 Cross-platform make

Recent formula history

FX Coudert alure: remove options
FX Coudert alure: patch for 10.13
Dominyk Tiller alure: add test
Dominyk Tiller alure: nit
Andrew Janke formulae: various audit fixes

Formula code at GitHub