Merge pull request #10 from a0x77n/dev

Fix for control flow of for- and while-statements.
Fixed unit test.
Added RELEASE_NOTES in preparation for 0.3 release.
Merge pull request #12 from a0x77n/dev

Control flow graph edge labels.
Small fix for release notes.
Merge pull request #13 from a0x77n/dev

Test code for if-statements.
Neo4j 1.9.5 to 1.9.7.
Merge branch 'dev' of ssh://github.com/fabsx00/joern into dev
Patch for argument-tainter to add DEF-links from arguments. Fixes #14.