v0.5.1: :arrow_up: Update dependencies

:arrow_up: Update GA to v4

v0.5.0

Full Changelog: v0.4.0...v0.5.0

v0.4.0

Use webpack without Babel. It will bring better performance to modern browsers, and worse support to old browsers.

v0.3.5

Update d3 to 5.16.0. Babel and browserify are updated as well.

v0.3.3

Use flexbox for tiling

v0.3.2

• Add diploid model and balancing selection
• Use stroke-dashoffset for path animation
• Draw 1,000 time points at most
• Use gaussian approximation for random binomial in Wright-Fisher

v0.3.1

Use ES2015 modules with babel and browserify

v0.3.0

• Stop using x18n
• Update d3 to version 4

v0.2.0

Add download link. Close #10

v0.1.9

Display input form with inline-boxes