Version 0.1.8

• Version v0.1.7
• Fix: firefox e2e test
• Remove unused sinon sandboxes (MetaMask#8063)
• Implementation encrypt/decrypt feature (MetaMask#7831)
• Remove unused container prop (MetaMask#8076)
• Fix: faucet url
• Fix: can't get token balance error link
• Clean: only show fc if balance is not zero
• Close notification UI if no unapproved confirmations (MetaMask#8358)
• Fix: focus popup no matter already opened
• Revert "Fix: benchmark"
• Fix: test-net token -> test token