1.0.0-alpha.4

This is the fourth (of many) alpha and is NOT ready for production yet.

This alpha fixes a bunch of array and destroyStrategy bugs.

Known issues

• In Angular 1.5+ some odd behaviours can occur if refreshing a form with a flash of content experienced
  The digest cycle is getting stuck under some unknown conditions which is most likely related

Changes

Fixed

• #602 Custom validator's message not showing
• #689 DestroyStrategy does not trigger when field no longer meets condition
• #750 Removing an invalid array item doesn't work properly
• #769 Model inside Array is not cleaned when Condition fails
• #857 Regression boolean values only saving true to model
• Fixes angular-schema-form-bootstrap#41 Place holder does not disappear even after a valid field is selected. Thanks to @ramakrij