Removed completed TODOs.

Snakefile

@@ -22,21 +22,7 @@ TODO: Discuss referencing info on SSPRK3
 TODO: Discuss name for quadrature mesh (now: grid)
 TODO: Contemplate using lambdify for basis
 
-TODO: Ask why MinMod slope is only calculated from degree 1, not 0
-    -> Done (degree 0 is avg, not included in slope)
-TODO: Ask whether cell indexing for limiter is correct as was or is now
-    -> Done (old was wrong)
-
 Urgent:
-TODO: Rework ModifiedMinMod limiter for efficiency -> Done
-TODO: Vectorize '_set_cell_slope()' in MinMod -> Done
-TODO: Vectorize '_determine_modification()' in MinMod -> Done
-TODO: Rework limit masking to apply over array instead of cell -> Done
-TODO: Vectorize 'apply()' in MinMod -> Done
-TODO: Vectorize 'get_cells()' in ANN detector -> Done
-TODO: Vectorize '_calculate_wavelet_coeffs()' for wavelet detectors -> Done
-TODO: Vectorize '_calculate_coarse_projection()' for wavelet detectors -> Done
-TODO: Vectorize '_update_right_hand_side()' for SSPRK3 -> Done
 TODO: Vectorize '_reset()' for update scheme
 TODO: Vectorize 'plot_details()'
 TODO: Replace loops/list comprehension with vectorization if feasible