pex/spree-additional-calculators — comment on commit 424c414d67b2a9ad6872d6ffffce808752717f87
File:  line 0
By jurgis:

I'm not sure about the changes meant for "# Support for Spree < 1.0.0" because this plugin will be installed on
spree sites of version 1.0.0 and above.
I'll need to read about and do some upgrade to make sure it is working properly.