Bump dev version
Fix parsing of JSON in flaskparser

[fixes #5]
Call `use` before type conversion

[see #4]
Bump dev version -> 0.5.0-dev
Bump version (0.5.0) and update changelog
Revert bumped version. Need to fix tornado support first
Fix tornadoparser tests
Merge branch 'tornado-fix' into dev
Bump version and update changelog