update issue #194
@feelpp/core start working on hdf5/xmdf support.
Use implementation from LifeV and adapt it to Feel++
 - cmake changes to find support for HDF5
 - helper class Feel::HDF5 to ease the use of HDF5
update issue #194
@feelpp/core PartitionIO class writes a .h5 file from a partitioned mesh
(done in sequential) and is used to read the partitioned mesh in // 
not yet finished
update issue #194
@feelpp/core framework more or less in place, now need to fix implementation
Merge branch 'develop' of https://github.com/feelpp/feelpp into develop
update issue #161
spaces are parallel, need to deconnect global world comm
Merge branch 'develop' of https://github.com/feelpp/feelpp into develop
GinacEx constructor : add a flag to check if source file has already been compiled (managed by proc 0). Condition if(exists) was not sufficient (the .so file could exists without being completed => link fails)
Merge branch 'develop' of https://github.com/feelpp/feelpp into develop
elementsWithProcessId with default arg (current rank)
add option use-linear-model to solve primal/dual problems only once (set increment=0)
use option crb.use-linear-model and add a close at the right place
optimize comm : remove mpi::all_to_all
use the new elementsGhost container
use new container for ghost elements which share the entity
add functor : UpdateNeighborPartition
fix face.G() and face.vertices() with 1d mesh
optimize comm : remove mpi::all_to_all
minor up : use stencilManagerAdd function
major update with doftable // :
 - some optimizations
 - remove mpi::all_to_all
 - fix discontinuous space (when a process have no dof)
 - genericity (1d is not a particular case now)
-fix create submesh with the new version of parallel doftable
-some type clean