* fix #328: properly suppress `default` when looking at * exports.

* damnnnn, curly. back at it again with indented blocks

…334)

Fix #225

* Change required lines amount to minimum 1 (instead of exactly 1)

to be at least one, not exactly one

Before it was 1. To prevent multiple lines between imports, core
`no-multiple-empty-lines` rule can be used.

* Fix `order`s `newline-between` for multiline imports

* Ignore unassigned imports while detecting empty lines

Previously it was calculated based on `loc` property of nodes. Counting
REAL empty lines is less error-prone.

* Fix `require` in object properties

* Added handling for multiple Webpack configs

If the Webpack config is an array, then use the first config that includes a resolve section.

* Adding unit test for multiple webpack configs

* Fixed unit test for multiple webpack configs

* Remove only call from unit test

* Added 'config-index' setting for resolving multiple configs

* Added documentation and release notes for multiple config support

* Fixed documentation for config-index; Fixed JSON in YAML examples

…or ExportAllDeclaration and side-effects-only modules

Fix prefer default (#342, #343, #350, #351) #MostPRsEver

* first draft of CONTRIBUTING.md

* feedback'd:

- added link to @kentcdodd's contributing how-to course
- moved checklist to the top