Added basic violinplot demo in examples
added disclaimer for ksdensity and changed return type to dict
Added lines to the violinplot function
Fixed mean/median for kde dict result
Added flags to violinplot which toggle whether various values of interest are displayed on the violin plots
violinplot: Added check for hold status, tidied up a bit
violinplot: Fixed up return values
Fixed pep8 compliance in ksdensity
Trying known_fail for coding standard