Removed un-masked versions of the force interaction and incorporated them in runner_nonsym_force_2_vec with an if statement based on a hard coded mask_cond variable.

Created a typedef for a mask object to abstract the mask creation away from the user and placed it in vector.h.

Conflicts:
	src/cache.h
	src/runner_doiact_vec.c

Reset the task debugging timers every time-step

Fixes #306.

See merge request !339

Update test kernel

Removes `doself1_density_vec_2` function. Updates `testKernel.c` to include tests for `kernel_deval_1_vec` and `kernel_deval_2_vec`.

See merge request !338

Added an option to the difffloat script to ignore a certain column if the numbers are too close to 0. Used this feature for the test27perturbed column rho_dh