1.0.20: Optimizations and bug fixes

[AlexJSully]

Optimization:

• Addressed client-side caching for faster loading
• Improved performance of mouse hover listeners
• Optimized images

Update:

• Added ESLint
• No longer supporting Internet Explorer
• Updated packages

Documentation:

• Fixed links in markdown files
• Updated README's examples

Bug fix:

• Fixed localStorage failing to initialize and store/call data
• Fixed issue where cannot call generateSVG
• Fixed issue with favicons, now uses BAR's favicon over local (same for web manifest)

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This discussion was created from the release 1.0.20: Optimizations and bug fixes.