Merge pull request #742 from ThomasWaldmann/sprint-branch

fix minitwit/flaskr test errors, improve docs about file open mode
Merge pull request #743 from ThomasWaldmann/sprint-branch

fix iterator in testsuite helpers
Merge pull request #744 from ThomasWaldmann/sprint-branch

2 small fixes for metaclass and import usage
Merge pull request #745 from ThomasWaldmann/sprint-branch

fix data types in after_request test
Merge branch 'sprint-branch' of https://github.com/mitsuhiko/flask into sprint-branch
Merge pull request #746 from ThomasWaldmann/sprint-branch

fix typos
Depends on itsdangerous>=0.12 now
Merge branch 'sprint-branch' of https://github.com/mitsuhiko/flask into sprint-branch
replace 1/0 by 1 // 0 to get rid of DeprecationWarning (and PEP8 issue)