MonkeyPatches for ruby 1.8.7
test for TaxRate
Cheaply fix encoding to pass specs
use DateTime instead of Time

This makes it parse correctly with the timezone and all
No simplecov for 1.8.7
Really, no simplecov
Brutal monkey-patch of roxml to get proper readers

For some reason, readers would always return the value wrapped in an
Array like:
["paid"]
But, I want just:
"paid"

So, if it's not supposed to be an array, but you're getting an array
anyhow, grab dat first element.