…ET interop

New method ThrowLastAsClrException should be used everywhere instead of obsolete PythonException constructor. It automatically restores .NET exceptions, and applies codecs for Python exceptions.

Traceback, PyVal and PyType are now stored and returned as PyObjects.

PythonException now has InnerException set from its cause (e.g. __cause__ in Python, if any).

PythonException.Restore no longer clears the exception instance.

All helper methods were removed from public API surface.

…ception

…chInfo masking exception object

The new type indicates parameters of C API functions,
that steal references to passed objects.

…ythonnet#1342)

Also added GetPythonThreadID

…net#1361)

Better error messages for method argument mismatch, Python to managed value conversion, and other problems.

- Converter.ToManaged obeys setError consistently
- PyObject_Hash and tp_hash return nint
- MakeGenericType and MakeGenericMethod have try/catch
- RaiseTypeError sets __cause__ instead of changing the message string
- PythonException.Normalize throws if an error is set
- AggregateExceptions print better from Python
- For an overloaded method, MethodBinder.Bind collects all binding errors with PythonExceptions as the inner.inner exceptions.
- ExceptionClassObject.tp_str calls Exception.ToString() instead of Exception.Message
(for justification see https://stackoverflow.com/questions/2176707/exception-message-vs-exception-tostring )
- Binding failures always have AggregateException as the cause, 
- Disabled test_method_parameters_change

…ers in Python, by returning the modified parameter values in a tuple.

BREAKING: MethodBinder omits a void return type when returning a tuple of out parameters.
DelegateManager unpacks a tuple of out parameters from Python (reversing the logic in MethodBinder) and sets the out parameters of the delegate.

This reverts commit 4684523.

…port-hook

…nize-import-hook

* Return ModuleObject.pyHandle, do not convert.
* Write domain tests generated code to file.

Don't piggyback on AssemblyManager's AssemblyLoadHandler method because
it may be called from other threads, leading to deadlocks if it is
called while Python code is executing

…test

…ions

Use exclusively PyUnicode_DecodeUTF16 for .NET->Python string conversion

…hook