Working Decomposer for names with BFS Indexes

- Extraction of subtree does work
- Require heavier load on Decomposer
- Bug on real compilation to be addressed.
Bug fix in TreeDecomposer

- Addition of a dummy node in some cases (nodes seems to not be always used?)
  - Check later: might actually be a problem.
TODO: real tests.
Removing of 0.toByte (forcing names)

- First run of the Benchmark. Pretty bad...