fix(Input): Padding, Icon color, & Floating changes

[mathewmorris]

• Proper padding
• Default Icon color
• Default right Icon size
• Floating animation/styles
• New isFloating rule
• Textarea floating
• Form Error margin
• Form Error in story

[codecov]

Codecov Report

Merging #78 into v5 will increase coverage by 0.07%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##               v5      #78      +/-   ##
==========================================
+ Coverage   66.66%   66.74%   +0.07%     
==========================================
  Files          20       20              
  Lines         450      451       +1     
  Branches       91       91              
==========================================
+ Hits          300      301       +1     
  Misses        120      120              
  Partials       30       30

Impacted Files	Coverage Δ
src/Form/Input.js	56.33% <100%> (+0.62%)	⬆️

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[codecov]

Codecov Report

Merging #78 into v5 will decrease coverage by 0.5%.
The diff coverage is 50%.

@@            Coverage Diff             @@
##               v5      #78      +/-   ##
==========================================
- Coverage   66.66%   66.15%   -0.51%     
==========================================
  Files          20       20              
  Lines         450      458       +8     
  Branches       91       92       +1     
==========================================
+ Hits          300      303       +3     
- Misses        120      124       +4     
- Partials       30       31       +1

Impacted Files	Coverage Δ
src/theme.js	100% <ø> (ø)	⬆️
src/Form/Label.js	50% <ø> (ø)	⬆️
src/Form/FormError.js	22.22% <ø> (ø)	⬆️
src/Form/Input.js	53.84% <50%> (-1.87%)	⬇️

---

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Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
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