v2.20.0

Features

• update identity contracts' purpose handling
  • to match updated purpose handling
  • VERSION_ID can be used to decide which version to use
  • newer identities will have version 1
  • keys can be added and removed with multiple purposes at once (addMultiPurposeKey, removeMultiPurposeKey)
  • accounts with purpose 3 can only be removed by themselves
  • only one account with purpose 3 is allowed per identity
• add experimental support for identities on substrate via vade

Fixes

• use activeIdentity for Onboarding.createProfile dataKey save