fix unicode problems in sith.py
illegal decorators tests
change Execution usage to always use the decorator function
Merge branch 'dev' of github.com:davidhalter/jedi into dev
instance readability improvements
more documentation on Instance
some method decorator tests were wrong (incomplete)
tests for init decorator problem, see #247
init decorators should not execute __init__ in case of self variable lookups, fixes #247
Merge branch 'dev' of github.com:davidhalter/jedi into dev