v5.2.1 (MetaMask#189)

Co-authored-by: Mark Stacey <[email protected]>

v5.2.0 (MetaMask#185)

v5.1.1 (MetaMask#179)

v5.1.0 (MetaMask#175)

v5.0.0 (MetaMask#151)

Update `version` to v3.1.0 (MetaMask#69)

This version includes a new `personal_sign` button

2.0.0 (MetaMask#42)

Fix html formatting; add prettier (MetaMask#39)

* fix html formatting; add prettier

* update readme