Add JSX support for Hyperapp.

[jorgebucaran]

Hi @devongovett! This PR adds Hyperapp support to Parcel!

[codecov-io]

Codecov Report

Merging #825 into master will increase coverage by 1.56%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #825      +/-   ##
==========================================
+ Coverage   91.27%   92.84%   +1.56%     
==========================================
  Files          68       68              
  Lines        3555     3591      +36     
==========================================
+ Hits         3245     3334      +89     
+ Misses        310      257      -53

Impacted Files	Coverage Δ
src/transforms/babel.js	97.57% <ø> (+1.08%)	⬆️
src/worker.js	90.9% <0%> (-9.1%)	⬇️
src/utils/prettyError.js	86.36% <0%> (-4.95%)	⬇️
src/assets/RustAsset.js	91.2% <0%> (-4.71%)	⬇️
src/packagers/Packager.js	89.65% <0%> (-3.9%)	⬇️
src/transforms/uglify.js	92.3% <0%> (-3.35%)	⬇️
src/Bundler.js	92.8% <0%> (-2.37%)	⬇️
src/utils/bundleReport.js	64.77% <0%> (-2.27%)	⬇️
src/assets/CSSAsset.js	86.08% <0%> (-2.2%)	⬇️
src/utils/getTargetEngines.js	96.59% <0%> (-2.15%)	⬇️
... and 46 more

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[devongovett]

Thanks! 🏆

[selfup]

This is awesome! 🎉 🙏