update new codes

...ipynb_checkpoints/Detrending comparisons-checkpoint.ipynb

...ests jupyter/.ipynb_checkpoints/Untitled-checkpoint.ipynb

...sts jupyter/.ipynb_checkpoints/Untitled1-checkpoint.ipynb

...kpoints/integration schemes comparissons-checkpoint.ipynb

SDE tests jupyter/Detrending comparisons.ipynb

SDE tests jupyter/SDE custom additive.ipynb

SDE tests jupyter/SDE pitchfor additive.ipynb

SDE tests jupyter/SDE pitchfor mod additive.ipynb

...tests jupyter/Single well/Single well skipping test.ipynb

SDE tests jupyter/Single well/Single well.ipynb

...er/Subcritical pithfork/SDE supercritical pitchfork.ipynb

...upyter/Subcritical pithfork/Sub_pitch skipping test.ipynb

.../Supercritical pithfork/SDE supercritical pitchfork.ipynb

...yter/Supercritical pithfork/Sup_pitch skipping test.ipynb

SDE tests jupyter/Untitled.ipynb

SDE tests jupyter/Untitled1.ipynb

.../based on Dutta 2018/Model 7_sharp/SDE sharp_model7.ipynb

SDE tests jupyter/custom additive/SDE custom additive.ipynb

SDE tests jupyter/fold/SDE fold.ipynb

SDE tests jupyter/fold/fold skipping test.ipynb