* All helpers now have a target type added, mostly OBJECT now, but e.g.
also NBOOL and CBOOL can be used.
* The helpers for operations are now built with factory functions for their
consistency
* Added shapes for all operations for the common types.
* Added dedicated nodes for all in-place operations solving a TODO.
* Inplace operations to be created are now derived from the binary
operations.
* Conversions for missing target types instead of falling back to
most generic helper.
* Converted manual comparison helpers to new Jinja template for
generating code automatically.
* Added optimization for more operations and their types, e.g. tuples,
floats, and more operations.
* More generalized templates to allow more C types that are not objects.
* Added tests to cover in-place operations
* Test infrastructure for generated tests from Jinja2 templates.
* Type shapes are now all instances, avoid mixing classes and instances
for clarity of code and correctness.
* Enable warnings for all operations in case of specific shape
combinatations not defined.
* Some corrections to boolean C target type code, now applied in many
more test cases.
* Proper void C type added, to be used in code specialization later.
