Add .editorconfig
New year!
Merge pull request #1392 from MaciejCzyzewski/patch-1

New year!
assign value to new arrays at creation in _.groupBy
Merge pull request #1394 from mcbex/master

assign value to new arrays at creation in _.groupBy
fixes #1390: make _.where consistent when used with empty attrs object
Merge pull request #1395 from michaelficarra/GH-1390

fixes #1390: make _.where consistent when used with empty attrs object
Merge pull request #1387 from d10/master

Add .editorconfig
_.keys accepts non-object arguments.
Merge pull request #1406 from braddunbar/keys

_.keys accepts non-object arguments.
Expose _.now

Expose the internal function getTime as _.now and alias _.getTime
Merge pull request #1410 from megawac/now

Expose _.now
more concise implementation of _.now/_.getTime
Remove _.getTime alias, comment.
Faster _.now fallback.
Update CONTRIBUTING.md
update link to underscore.string

(Official repo was moved to https://github.com/epeli/underscore.string)
Merge pull request #1415 from skv-headless/master

update link to underscore.string
use `contains` instead of `indexOf` in _.intersection. closes #1417
use _.partial in definition of _.intersection

This takes the tweak suggested in #1417 one step further.