spree/spree — pull request #4259 by jdurand (2014-01-27 21:34:38+00:00)
Title: Use both the dot (.) and the custom decimal separator for amount parsing

Even though other locales use a different decimal separator (ie: comma [,]), it is still very common to use the dot (.) when entering decimal values.
This was reported by a client who actually tried to authorize 30.49$ and ended up preauthorizing 3049$ on the clients credit card.