mrb_rangeBar broken

[tellypresence]

Layout xml attribute mrb_rangeBar has no apparent effect; always "false" (single pin only, no range selection capability)

Checked against all versions between and including 1.4.3 and 1.4.7

Procedure:
Add dep to app-level build.gradle
In blank fragment add the two sample xml blocks on README page (need to change id of the non-range second block)
Run app; both bars are identical i.e. single pin only despite mrb_rangeBar set to "true" in first bar