Make acquisition 1 or 2d a choice instead of seq.
Fix bug in nmrML writer
Read decoupled method properly
Fix sha1
Don't require contacts in acquisiton
Write out namespace def
Write out version in attribute
Add new IPB hop for daniel
some refinements
Added presat water suppression method, refined probe subclass structure, ... based on meeting with local experts.
moved element order of decoupled Method up to appear right after the boolean indicator of decoupled.
minor additions to element annotations
Merge branch 'master' of github.com:nmrML/nmrML