Guardfile

all_on_start: true
failed_mode: :focus
[ci skip]
Travis: test the latest 2.0/2.1 release
Travis: Skip installing coverage gems
gem 'rb-gsl'

[ci skip]
Install GSL before running tests on Travis
Refactor tests for AO::Gaussian::PrimitiveProduct
Fix Gemfile to require gsl
Refactor tests for PrimitiveProduct#hermitian_coeff_decomposed