Support programmatic enabling/disabling of fastscroller

[marcardar]

At the moment, this can only be done through the XML (fastScrollEnabled), but often we want to enable/disable according to, for example, how many items there are in the list. So it would be good to add a property on the recyclerview for this.

Similarly, for other XML-only attributes.

[shahsurajk]

would you like to pick this up @marcardar ?

[marcardar]

@shahsurajk unfortunately I'm really snowed under at the moment :(

[arguswaikhom]

When is this enhancement going to be released??