* Add abs, round, floor, ceil operators Port of https://github.com/mapbox/mapbox-gl-js/pull/6496 * [ios, macos] Simplified abs, ceiling, floor expressions * [ios, macos] Added rounding expression function * [android] - binding integration for round, ceil, floor and abs expressions * Update mapbox-gl-js to include non-integer rounding test * Drop extra braces * mapbox-gl-js -> master * Update style-spec docs -> PropertyFactory.java