Merge pull request #68 from trontrytel/master

pull me too
Merge pull request #69 from trontrytel/master

wip on 2d iga + possible bug in 2d_mpdata(?)
renaming halo_ -> minhalo
adding a TODO
Merge branch 'master' of github.com:slayoo/libmpdataxx
sync
adding two notes
wip on error handling and hdf5 output
Merge pull request #70 from trontrytel/master

toa for 2d mpdata (with or without iga) - but not tested
functional (but by no means complete) HDF5 output
wip on hdf output
Merge branch 'master' of github.com:slayoo/libmpdataxx
hdf improvements
undoing 7ecec3e2fceb5554755d3833f9332d9790d47393
sync
late evening changes...
Merge branch 'master' of https://github.com/trontrytel/libmpdataxx

Conflicts:
	tests/rotating_cone/test_rotating_cone.cpp