Better default values for Survey min/max required answers.
IOS-570
Add French Canadian string  resources.
Added new App Store URL for iOS 7.1+ devices.
New URL opens "Reviews" tab directly, rather than the main App Store page.
Fixes IOS-567
Add French Canadian translations to Xcode project
IOS-564
Merge pull request #110 from apptentive/ratingURL7.1

Added new App Store URL for iOS 7.1+ devices.
Merge pull request #108 from apptentive/surveyDefaults

Better default values for Survey min/max required answers.
Merge pull request #109 from apptentive/french_canadian

Add French Canadian string  resources.
Revert "Add French Canadian string  resources."
Merge pull request #111 from apptentive/revert-109-french_canadian

Revert "Add French Canadian string  resources."
Merge branch 'Next' into french_canadian
Added authors to podspec
Fixes issue where text selection loupe showed through Message Panel to the view beneath.
Fixes IOS-342 and #94
Merge pull request #114 from apptentive/loupe

Fixes issue where text selection loupe showed through Message Panel
Added methods for engaging events with `customData` and `extendedData`.
Added methods for sending Metrics with with `customData` and `extendedData`.
Store `data`, `customData`, and `extendedData` in the Event dictionary that formerly held `data`.
Store each under the correct key for server when adding to the dictionary, rather than later in `apiJSON`.
Added convenience methods for creating the initial `extendedData` types.
Added demo event with `customData` and `extendedData` to FeedbackDemo.
Added logging of 422 errors when `customData` or `extendedData` is malformed.
IOS-585
Not including `extendedData` keys if value passed in is `nil`.