distr6 1.3.5

• Added Erlang distribution
• Fixed mistake in documentation for Weibull, thanks to Paul Northrop (@paulnorthrop) for pointing this out.
• Fixed bug in plot preventing only quantile being plotted on its own
• Converted descriptive public methods to active bindings. Unfortunately this will break reverse dependencies as there's no way to soft deprecate these. Affected methods are: decorators, traits, valueSupport, variateForm, type, properties, support, symmetry, sup, inf, dmax, dmin, kurtosisType, skewnessType