Added sharing recovery tests for iteration
Reverted toForeign back to non-fusible version to prevent work duplication. Relates to AccelerateHS/accelerate#116
Don't pass epsilon/softening every iteration.
Re-added support for PBOs
Fix for floating point comparisons with NaN and Infinity.
Added foreign scalar tests
Smoothlife now uses new FFI (fixes AccelerateHS/accelerate#118)
More iteration tests for sharing recovery.
Change n-body visualiser to use new API
add individual buildable flags to each of the executables