This one accepts a suitable std::initializer_list to allow for automatic
creation of parameters of more complex braced lists such as

```
void foo(const Parameter& param);

foo({{"key_1", {0., 1.}}, {"key_2", {2.}}});
```

Type tuple fix

This is not actually necessary. Adding a handler for std::exception also
hid the more specialized handlers provided by pybind11 itself.

This is not actually necessary. Adding a handler for std::exception also
hid the more specialized handlers provided by pybind11 itself.

Small fixes

that version reoves the necessity to add prefixes to license strings