Distfit

* updated default colors in plot
* xlabel and ylabel can be specified for `plot`

* Do not show pdf in case `pdf_properties=None`

* Various updates in plotting
* CDF plotting with `.plot(chart='CDF')`
* Quantile quantile plotting is now possible `qqplot`
* Bugfix when changing alpha parameter for plotting.
* Updates in docstrings
* Code refactoring
* See [documentation pages ](https://erdogant.github.io/distfit/pages/html/Plots.html)for more information about plotting.

* bug fix for plot in case of discrete method.

* `Verbose `now uses the official logging library. This means that the verbose input has been changed slightly:

verbose : [str, int], default is 'info' or 20
Set the verbose messages using string or integer values.
* 0, 60, None, 'silent', 'off', 'no']: No message.
* 10, 'debug': Messages from debug level and higher.
* 20, 'info': Messages from info level and higher.
* 30, 'warning': Messages from warning level and higher.
* 50, 'critical': Messages from critical level and higher.

* Updates in docstrings.

* functionality added to better controling plotting.
* `emp_properties, pdf_properties, bar_properties and cii_properties` can independently be controlled are disabled during plotting.
* Docstrings updated