Forms: don't include form generation time in assembly
Forms: reuse meshes
Allow running autotuning
Dolfin defaults to 3d mesh and uses avx
Add Helmholtz benchmark to forms
Add a hyperelasticity benchmark to forms
Hyperelasticity requires div for premultiplying functions
Add dolfin forms for tensor mode
Hyperelasticity requires *dim for premultiplying functions
Make helmholtz depend on premultiplying functions
Run ffc's -O in the coffee's test suite
Add a basic script to collect results