Fairly sure this is an eclipse issue, no problems are reported in idea...
https://bugs.eclipse.org/bugs/show_bug.cgi?id=474593

Threw an exception when an import member could not be found.
Also, the value was not used anywhere

TODO: Verify that the access check is correct

Functional interface wrappers should work now
Implementing a method with a signature differing from the actual one (e.g. when dealing with generics) now creates a proper bridge method
The Java Bytecde compiler used an incorrect method in checkCast
We now no longer use hardcoded 'accept's as method names but whatever the context tells us to.

Currently only supports 'accepts' methods, until we can get a way to get the actual method signature/name from the class

Directly using the lambda where the functional interface is requested works.
The lambda class will then directly implement the functionalInterface and not use a wrapper class

- Fixed a number of bugs
- Upgrading build system to a more uniform system
- Improving error output (for IDE)
- Changed parser to generate line offsets differently (easier for IDE to process)