Fix unit tests + a list of other issues

[leios]

Grid test:

• set gridding generation to separate function
• loop through check all elements == gid

parSum test:

• Fix comments (64 x 64), not 8 x 8

General:

• Return errors from all mallocs also

Evolution_test:

• Simple harmonic trap returns energy of wavefunction

Missing tests:

• Evolution test

Non Unit Tests:

• Remove 3D vortex tracking (for JOSS)
• Add more math functionality to dynamic parsing

[leios]

I think these have been appropriately addressed.