Merge pull request #2 from BookBub/rl-merge-upstream-changes

merge upstream changes

Bring the money-rails gem up-to-date with upstream (v1.8.0)

Merge remote-tracking branch 'upstream/master' into master

Only use currency defined by `monetize` when validating numericality.

The previous default of using the current locale’s symbol/seperators
would mean that fields that were assigned a value using a different
symbol than the current locale would always fail validition; e.g.
`deal_price = “£3.99”` would fail validation if I18n.locale = ‘en-us’

Version 1.4.1

v1.4.0

Bump version to 0.12.0