feat(Responsive): re render only on visibility or props change

[danielr18]

Instead of computing isVisible() on render, it's better to have its value in the state, as it avoids:

• shouldComponentUpdate logic
• re rendering on every width change, when its value is only used to check if it's visible

By having isVisible in state, the component only renders when you update isVisible and when props change. I also made sure that isVisible is recomputed if the props it depends on change.

[welcome]

💖 Thanks for opening this pull request! 💖

Here is a list of things that will help get it across the finish line:

• Run yarn lint locally to catch formatting errors. This will fix some errors automatically, commit and push any changes.
• Run yarn test locally to catch errors. This ensures all components still behave as they should.
• Run yarn start to run the doc site locally and try a few pages, ensuring everything is in good working order.
• Include tests when adding/changing behavior.

We get a lot of pull requests on this repo, so please be patient and we will get back to you as soon as we can.

[codecov-io]

Codecov Report

Merging #3274 into master will not change coverage.
The diff coverage is 100%.

@@           Coverage Diff           @@
##           master    #3274   +/-   ##
=======================================
  Coverage   99.92%   99.92%           
=======================================
  Files         169      170    +1     
  Lines        2803     2803           
=======================================
  Hits         2801     2801           
  Misses          2        2

Impacted Files	Coverage Δ
src/addons/Responsive/Responsive.js	100% <100%> (ø)	⬆️
src/addons/Responsive/lib/isVisible.js	100% <100%> (ø)

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[layershifter]

@danielr18 I made some changes, can you please check?

[danielr18]

Changes look good

[welcome]

Congrats on merging your first pull request! 🎉🎉🎉