• [#5704] Implements new gas customization features for sending, confirming and speeding up transactions
• [#5886] Groups transactions - speed up, cancel and original - by nonce in the transaction history list
• [#5892] bugfix: eliminates infinite spinner issues caused by switching quickly from a loading network that ultimately fails to resolve
• [#5902] bugfix: provider crashes caused caching issues in json-rpc-engine. Fixed in (MetaMask/json-rpc-engine@6de511a)