Added required variables to surface context

removed some todo comments

removed periodicity

Initial commit for replacing periodic BCs with in/outflow BCs => added support for in/outflow in navierstokes.c

some clean-up

removed the forcing term of case 4

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Added the forcing terms for case 4 though it is disabled...still seeing large error

Made some changes to the tests

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WIP: Debugging: added 4 tests for debugging but there is still a problem in the last one

convergence_plot.py: changed the first color to stand out

convergence_plot.py: modified to plot loglog

gitignore: adding *.png for ignoring convergence plots

Debugging: q[3]=0 since we have slip bc in the z direction

verification-test.sh: specify number of faces in the z direction = 1

Debugging: perform the tests in one ts to investigate the bugs in the spatial discretization

Some changes in E based on the given formulation in the paper

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debugging: added some if-statements momentarily

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added the plotting command in the bash script for now

adding the plotting python script for now

ETV: fixed the title and info of the paper

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