Patch to fix issue #5.
Added a test case for #5, confirming the bug.
Merge branch 'dev'
Moved lib-dev to lib.
Merge branch 'dev'
Fix faulty implementation of vertex removal.
Correct argument type.
Docs for joern-slice.
Implement toString method.
Format code.
Merge pull request #25 from a0x77n/graphutils

Update graphutils
Merge branch 'dev' of ssh://github.com/fabsx00/joern into dev
Upgrade control flow graph.

Structural changes:

    - add unique entry node
    - add unique exit node
    - remove empty blocks
    - introduce error node for unresolved jump statements, or other unexpected
      errors like parse errors.

Changes for switch statements:

    - label edges of switch statements with the corresponding case label
    - distinguish between switch statements with and without default cases
    - handle break statements correctly.
Adapt test cases.
Merge pull request #26 from a0x77n/cfg

Upgrade control flow graph.
Fix bugs in handling of unusual for statements.
Fixed handling of 'case' labels using CHARs.
Correct typo in exception message.
Merge pull request #27 from a0x77n/cfg

Correct typo in exception message.
Added plotting examples.