0.3.1 - 2018-12-03

This release fixes minor bugs and improves the json output.

Changed

Improve json ouput:
- Add helpers to abstract_detector
- Use more detailed output for each detector and more precise source mapping information
- Document the json: https://github.com/trailofbits/slither/wiki/JSON-output
Add support for Truffle projects using a truffle-config.js file instead of truffle.js
Fix incorrect slithIR conversion for mapping of mapping (#83)
Fix minor bugs (remove duplicate constructors, fix incorrect is_implemented attribute in Modifier)