Even though many float-based properties derived from
FloatingPointProperty used the same step value, T(0.01), it had to be
specified when instantiating them. To reduce boilerplate code in
property constructors, FloatingPointProperty now uses T(0.01) as the
default step value.

FloatingPointProperty extends NumericProperty to control how many
decimal places should be shown when displaying the property's value. For
that reason, it stores information about the number of significant
decimal places of each of its components.