Metric support!
Added new UISegmentedControl to allow for toggling english and metric measurements… Because well, my US downloads are a fraction of the download base and SI units are just handy to know anyway.
I modified my engine to persist both US and SI(metric) units because it is probably easier that way considering that my WUnderground API requests get both units of measurement anyway instead of having to push the computation down onto the device, which would slow down performance.
Version bump to 1.1 to reflect somewhat major changes to base code considering I added NSInvocationOperations, SI units required change to my model, and such.