ClassLoading 0.5.0

Decompilation to source code in-progress and first round trip compile/decompile unit tests

Added

• A new twg2.jbcm.ir package with helper classes for tracking state and data related to decompilation
• CodeOffsetGetter interface implemented by ChangeCpIndex
• CodeFlow for helping analyze potential code flow paths through a method
• Unit tests with tests which perform compilation of source code and check decompilation back to intermediate view

Changed

• CodeToSource is in-progress, simple code can be converted, loops, switch statements, and interface/dynamic method calls are still TODO
• Split IoUtility into new CodeUtility class and moved static no-op CpIndexChanger and CodeOffsetChanger into their respective interfaces
• Renamed ByteCodeConsumer -> BytcodeConsumer
• Moved MethodStack to new twg2.jbcm.ir package
• Lots of new functionality in Opcodes to support to source decompilation
• Extensive CompileSource changes/improvements to support simple use cases like compiling in-memory (although a physical temp file still gets written under the hood)
• Moved LookupswitchOffsetModifier and TableswitchOffsetModifier out of IoUtility and into their own classes

Removed

• CpIndexChanger.shiftIndex() interface method since it was unused and CodeOffsetChanger is equivalent
• Unused classes: Offset, OffsetOpcode, Opcode, OpcodeObject