Initialise member variables to empty strings rather than null
Update composer to prefer source to avoid github rate limitting
Merge pull request #1 from tomphp/development/initialise-members

Initialise member variables to empty strings rather than null
Add AddressHydrator and ContactHydrator
Add Contact and Address fieldsets
Merge pull request #2 from tomphp/feature/add-hydrators

Add AddressHydrator and ContactHydrator
Merge pull request #3 from tomphp/feature/add-fieldsets

Add Contact and Address fieldsets