Fix memory leak in python bindings
Cope with evented updates that pass empty values as <tag/> (rather than <tag></tag>)
Move error handling out to be dealt with with by Python caller
Ensure CBs stay in scope until after they are called
Merge branch 'master' of core.linn.co.uk:/home/git/ohnet
Fix typo giving wrong initial values on Bool properties
Ensure AsyncCb cleanup is not over zealous
Extend search path for DLLs to current and on-up directories
Add PyOhNet bundling for publishing