v1.0.0-alpha.20

Added

• Add get_mut, pointer, pointer_mut methods for easier manipulation of Schemas (#416)
• Use patternProperties on map schemas where appropriate (#417)
  • ⚠️ BTreeMap<K,V>/HashMap<K,V> now only implement JsonSchema when both K and V implement JsonSchema

Fixed

• When a struct is transparent, don't ignore other attributes (#415)