Now it doesn't select the first nondefault method but the first public nondefault method

Reason behind this is to prevent NoClassDefFoundErrors for working with Sided classes in MCF

Let's see if putting them all into one TypeVariableContext works..?

Also, a lambda that returns void cannot conclude the generic header. How should we deal with this?

This reverts commit 95d9aa2b32.

Reason was that it tried to invokeInterface whereas a bridge redirects to a local (virtual) method.
The local method was flagged incorrectly as the same type as the bridger which would be interface, hence the error

They worked in my simple, void test example

The Optional annotation is parameter, not type bound

E.g. IIngredient has a method that accepts an IItemStack, which is a sub-interface

TODO: Verify that the access check is correct

- 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)