Version 5.0 Release

This release brings the project current to Unicode 12.0 and JoyPixels 5.0.

This release contains several changes to the emoji.json data file. Please see UPGRADE.md for more information.

This release also addresses several issues, including:

• Fixes joypixels/emojione#610
• Fixes joypixels/emojione#615
• Fixes joypixels/emojione#617
• Fixes joypixels/emojione#619
• Fixes joypixels/emojione#625
• Fixes joypixels/emojione#631
• Fixes joypixels/emojione#635
• Improves joypixels/emojione#639
• Fixes joypixels/emojione#642
• Fixes joypixels/emojione#644
• Fixes joypixels/emojione#654
• Fixes joypixels/emojione#662