Merge v1.4.0 into master

[averycrespi]

v1.4.0 is a minor release that focuses on design and documentation.

• Update screenshots to show compact buttons (#92)
• Add extension version to connection toast (#93)
• Add feature request issue template (#96)
• Move development notes to wiki (#99)
• Add error toasts when listener binding fails (#102)
• Improve toast design (#104)