In addition to ordinal scales, quantile, quantize and threshold scales don’t
define a ticks method. Unlike ordinal scales, however, these quantitative scales
also don’t define a rangeBand method, so the axis was crashing trying to render
these scales. This fixes #1367 by checking for the required rangeBand method
rather than assuming scales without a ticks method define a rangeBand.

Note, however, that even with this change you probably still want to define tick
values explicitly when using one of these scales with an axis. That’s because
each tick in the axis represents a span of values in the domain; you can use the
invertExtent method to get the span for each tick value.