Pull in only the necessary active_support files
Pull in only the necessary active_support files

I removed active_support/all, then ran the tests repeatedly each time pulling in a new piece of active_support. Tests now pass, however it's unlikely that Shopify tests are 100% complete. This commit will need some extensive testing in large real world apps. Luckily any failures do to missing active_support files should be extremely easy to fix, just add in the necessary 'require' statement.
stympy/active_merchant