fix test
Merge branch 'develop' of https://github.com/feelpp/feelpp into develop
does not exist anymore
up
minor
added laplacian in polar coordinates
Merge branch 'develop' of https://github.com/feelpp/feelpp into develop
fix eigen backend for sprase matrices
add a parameter h  to control hsize for the basic geometries
which can be controlled 
 - from the command line using ```gmsh.hsize```
 - from the code itself 
   ```
   auto mesh = unitSquare( 0.1 );
   ```
support for both eigen (sparse) and eigen (dense) backend.
the eigen dense backend should not be used in pratice or in very special cases
fix warn
fix compilation
Add normH1 and normSemiH1
edit feelpp-manual
update Stokes example
Merge branch 'develop' of https://github.com/feelpp/feelpp into develop
but in heatsink due to addRegion
use createSubmesh with a list of range. Ex :
 auto mesh2 = createSubmesh( mesh, markedfaces(mesh,std::list<std::string>({"inlet","outlet"})));
add mesh filter with std::list<std::string>
add a new constructor