Change:
- Array
  - functional ctor removed
  - ctor from std::vector introduced
- Numbers-enumberator provided
Change: drop empty code-items
Refactor: Aggregate-function for externals provided
Refactor
Debug
Bug: arg is not replaced with context feature
Change: Parameters for Feature::FunctionResult
New: Compile getter-call
New: Aggregate() and FirstIndex
New: compilation of functions