Chart::Math::Axis figures tick intervals

Here's another problem I'd never considered, and I'm now glad that it's handled by code that already exists (and has now been recently updated). Adam Kennedy's Chart::Math::Axis module helps with a most basic issue of drawing charts:

Chart::Math::Axis implements in a generic way an algorithm for finding a set of ideal values for an axis. That is, for any given set of data, what should the top and bottom of the axis scale be, and what should the interval between the ticks be.

I also point out that the paragraph above, from the synopsis of the module, is what all modules' synopsis sections should aspire to. It explains in clear language what the module does, and without describing it in terms of other modules.