API 2.0 thoughts

[dereuromark]

Currently, the API is as follows

Default scale vs required argument for scale

• multiply() by default adds the scales of each number.
• divide() requires a 2nd param scale, and right now the demo defaults to the max scale of the two numbers.
  So 1 and 2 result in 0 as the scale of that result cuts of the decimal values.

We could think to also auto-calculate scale for divide() as max($one->scale, $two->scale) of each elements scale similar to multiply().

Speaking API (no le, gt methods).

• Not all the methods are fully speaking yet, sqrt(), pow() etc. Wonder if we want to make those more verbose or if those are already clear enough.

Thoughts?