`/` has a higher precedence than `*`.
New arithmetical expressions evaluation.

We use lambda and currying to fake a right-associated tree whereas the
AST is left-associated.

We have removed the `**` operator since the `pow` function already exists.

We have also removed the `%` operator since it is not used yet.
Merge branch 'precedence' into incoming
[auto] Merge from Math

    • #0b666c0 — `/` has a higher precedence than `*`. (Ivan Enderlin, 2014-09-10)
    • #147a38d — New arithmetical expressions evaluation. (Ivan Enderlin, 2014-09-11)
    • #ed6f9bd — Merge branch 'precedence' into incoming (Ivan Enderlin, 2014-09-22)

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Merge branch 'master' of /var/lib/git/repositories/Library/Math