Allow eslint v3 & greater as a peer dependency

Fixes #62 again

Add eslint as a peerDependency

Fixes #62

Support namespaced names by integrating with latest jsx-ast-utils

• [new] Integrate with latest jsx-ast-utils to use propName function. More support for namespaced names on attributes and elements.

[fix] Handle spread props in multiple rules

1.4.1

[docs] - Update CHANGELOG

Extract JSX core and integrate dependency

• [dependency] Integrate jsx-ast-utils
• [fix] Better error reporting for aria-unsupported-elements indicating which prop to remove.

Spelling suggestions and bugfix

[new] Spelling suggestions for incorrect aria-* props
[fix] Ensure role value is a string before converting to lowercase in img-has-alt rule.

[fix] - Handle dynamic tabIndex expression values

Fixes #50

This fix retains validation logic for literal tabIndex values added in #48.

[fix] - Fix checks involving the tabIndex attribute that do not account for integer literals

Fixes #48

Avoid testing interactivity of wrapper components with same name but different casing as DOM elements (such as Button vs button).

Fixes #46

Import all roles from DPUB-ARIA

From #45