everything finally seems wokring.
now work on exact solution
convergence analysis started
before branching
try different solutions
automation of solution filed --> bcs, body force, source seems working for simplae case
some convergence working on manufactured solutions
some more automation
dirichlet working good
...
auto-creation of the manufactured solutions
before adding cppcode
nonlinearity of the boundary term not considered?
readme
neuman bc should be working correctly
error calculation over fine mesh
mesh convergence working