When `barThickness: undefined|null` (default), we compute an optimal sample size based on the smallest tick interval reduced to prevent any bar to overlap (bar equally sized). Also added support for a special `barThickness: 'flex'` value (previous default) that globally arranges bars side by side to prevent any gap when percentage options are 1 (variable bar sizes).
Move some of the "core" and "canvas" utils in `helpers.core.js` and `helpers.canvas.js` and introduce the new `isNullOrUndef` and `isObject` helpers. Deprecate `indexOf` and rename `drawRoundedRectangle` to `roundedRect` which now creates a simple `rect` path if radius is 0. Write missing unit tests for the moved helpers.
Add Travis CI task to deploy the docs, samples and dist files to chartjs.github.io for the `release` and `master` branches. A `latest` symbolic links is also created for each folder to the highest version (or `master` if any).
In order to take full advantage of the new plugin hooks called before and after a dataset is drawn, all drawing operations must happen on stable meta data, so make sure that transitions are performed before.
When datasets.data contains a null value, the label displays incorrect
value.
code additions:
- unit tests for truthy label values (when data is null)
- checks to ensure handling of null value in getLabelByIndex method
added mock data sets from issue #3528 example
expect the return value from getLabelForIndex method to be valid (truthy)
added check for null of first data value in getLabelForIndex
fixed indentation and null comparison operator in code
fixed mistake in definition of firstData variable
changed testing for data on index 0 to using index variable
changed firstData to use value instead
condense the statments to use value variable
Add support for creating a chart from the canvas id and prevent exceptions, at construction time, when the given item doesn't provide a valid CanvasRenderingContext2D or when the getContext API is not accessible (e.g. undefined by add-ons to prevent fingerprinting). New jasmine matcher to verify chart validity.
* Make Travis to deploy built files for tags
See https://docs.travis-ci.com/user/deployment/releases
* Remove and ignore dist/* files
Travis now builds and deploys these files for all tags, so we don't need to have them on the repository anymore.
* Add download links to the latest version
Remove outdated *standard build* and *bundled with Moment.js* links from the documentation and add a link to the latest GitHub release, from where the user can download `*.js` files.
