* Adds code coverage report the output of `npm test` and adds detailed html code coverage report using the command `npm run-script test-cov`

* Switch over to using functions in lib/ rather than dist/, so that code coverage stats are complete.

* Import vis at the top level to keep ItemSet passing

* Remove requirement for dist/vis in TimelineItemSet

* Adds tests for Popup

* Tests and sinon dependency introduced

* Code changes to modules to tighten up code

* Corrects broken tests and adds more tests to ColorPicker

* Adds additional tests to DataSet

* Adds tests for uuid

* Removes unused functions from util

* Adds tests for utils: recursiveDomDelete, isDate, convert and isType

* removes redundant code

* Adds additional util tests

* Address spacing, and unnecessary tests

* Correct test description

* Adds isDate tests

* Adds sanity check assertions to popup destroy tests

* Corrects usage of @static jsdoc annotation

* Correct unresolvable types

* Correct types in jsdoc and remove extraneous @class & @constructor jsdoc

* Remove incorrect @static jsdoc

* Adds missing jsdoc for param copyFromGlobals

* correct jsdoc in util

* Corrects casing on jsdocs

* Swaps @inheritDoc to @ignore for constructors where constructor args are documented in the class

* Instantiates Errors with `new`

* Addresses improperly defined @callback tags.

* Split callbacks out to separate jsdoc

* Moves constructor jsdocs back to constructor and drop @ignore.

* Enables require MethodDefinition for require-jsdoc lint rule and corrects 66% of missing Method Definitions

* Adds jsdoc for all remaining methods and corrects @class/@constructor documentation

* Define values more accurately

* Correct bugs that prevent jsdoc generation

* Removes redundant .eslintrc from graph3d, lints the rest of the code base, and enables valid-jsdoc lint rule

* Corrects lint violations

* lint shared

* Re-introduce semi-colons to () => {} variables in ColorPicker

* replacing all ES6 imports with CJS require calls
resolves #2934
used the following regex to apply the changes in lib:
s/import\s+(\w+)\s+from\s+(.*);\s*$/var $1 = require($2).default;/
s/import\s+(\w+)\s+from\s+(.*)\s*$/var $1 = require($2).default;/

* cleaning up inconsistencies

added example. Improved handling of options for hierarchical view.

- Accepted pull request #1544, thanks @felixhayashi!
- Fixed documented bug in #1544.

not sure but for some reason, once the colorpicker is open, the buttons won't work correctly and the huecircle jumps back.