Adding cache to SubjectField. They rarely change and when not caching then it will hit the network every time you set a field on a new person
Caching is now optional and you can turn it on and off. Still only caching for find_all
changing default cache mode to false
refactored subject field spec
Merge pull request #1 from lucasmartins/subject-field

Adding cache to SubjectField.
Removed unneeded whitespace
Removed unneeded whitespace
Reverted commit 7d7d835 as it doesn't revert the default, but instead changes the default of the function
Merge pull request #64 from basvodde/master

Adding cache to SubjectField.