click-repl does not work with Click 8.0.0 anymore

Click 8.0.0 removed an internal name which click-repl depends upon:

E.g. on Python 3.8 on macOS:

$ python -c "import click; import click_repl"
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/Users/maiera/virtualenvs/pywbemtools38/lib/python3.8/site-packages/click_repl/__init__.py", line 6, in <module>
    import click._bashcomplete
ModuleNotFoundError: No module named 'click._bashcomplete'

[regisb]

I think we can close this, now that v0.2.0 is out.

[anthraxx]

@andy-maier that doesnt really work for all t he distro packages. with no click 8 support this will make a major problem for the click-repl distro package