hvplot.util.with_hv_extension hides docstrings

[toddrjen]

ALL software version info

• hvplot = 0.7.0

However looking at the source code this issue should still be present in MASTER.

Description of expected behavior and the observed behavior

Functions wrapped with the hvplot.util.with_hv_extension decorator have their docstrings hidden by the wrapper docstring.

functools.wraps can fix this.

Complete, minimal, self-contained example code that reproduces the issue

Example

>>> import hvplot
>>> help(hvplot.scatter_matrix)

Result:

Help on function wrapper in module hvplot.util:

wrapper(*args, **kwargs)

This is the docstring from the wrapper function inside hvplot.util.with_hv_extension.