Fix for getScreenBox

Release that includes fixes to getScreenBox. Fixes #230.

ES6 modularization and updated d3 depdencies

This release updates d3-tip to use import/export while also updating the library to use Rollup with smaller, more focused d3 packages.

d3 3.5.5 support

• Update d3 to 3.5.5
• Add tip.destroy() to remove the DOM element

CommonJS support

Merge pull request #83 from Caged/commonjs

Add commonjs support

v0.6.5

Updated to d3 3.4

Fixes scroll offsets

See this fiddle for an example of the fix working.

Explicit targets

• Ability to specify explicit targets

tip.show(data, target)

Fix offsets

Fixes offsets in Safari and Firefox. It also corrects tooltip position in the iPad.

Fix element overlap

• use pointer-events instead of pointerEvents which was preventing the property from being set and blocking interaction on overlapped nodes.
• Remove minified version. It was always out of sync.
• Simplify project structure. Can now be included in sprockets projects with a simple #= require d3-tip.

v0.6.0 - Support for CSS transitions

• Support for CSS transitions.

You can find an example at examples/css-transitions.html