Major changes include:
- Warning messages for failed transactions (and no longer dismiss the error silently)
- Fee selection for both gas price and gas limit; auto-detects contracts vs transfers
- Max Spendable button
- ENS Support
- Per-Account network configuration (manage Ropsten and Homestead simultaneously)
- Keyboard fix for locales which use the comma (,) instead of the period (.) as a decimal separator
- Major refactor for secure info screens (InfoViewConfroller => ConfigController)
- Major refactor for Signers (abstracted out of Wallet); this will make Firefly much cleaner
- Secure Enclave is now used to store the decryption key for accounts, so biometry spans launches
- Increase contrast ratio
- Overhaul of the QR code scanner and Photo selection
- Improved Today extension layout and information