[IMPR] Derive ArgumentDeprecationWarning from FutureWarning
[IMPR] Derive ArgumentDeprecationWarning from FutureWarning

Derive ArgumentDeprecationWarning from FutureWarning which is recommended
for warnings intended to be seen by application end users. Keep inheritance
from UserWarning for backward compatibility.

Change-Id: I6f3fdb9b01b1460e28c379b1804278843fb30c0e

PersianWikipedia/pywikibot-core,wikimedia/pywikibot-core,wikimedia/pywikibot-core