Allow null to be passed as options, so you can specify a callback without options
Show callback parameters in console in examples.html
Make endDate represent the end of the chosen date/range, rather than the start of the last day
Use .show-calendar CSS class to control showing/hiding of calendars
Some misc code cleanup / simplifications
Redo how daterangepicker is open/closed, fixing a couple problems.

- Allows clicking the trigger button/element to hide the picker (like regular bootstrap dropdowns)
- When a Bootstrap dropdown is open, clicking the daterangepicker element should close/hide the Bootstrap dropdown
- When a daterangepicker is open, clicking a Bootstrap dropdown element should close/hide the daterangepicker.
Merge pull request #268 from elasticsales/endofday

Make endDate represent the end of the chosen date/range
Merge pull request #270 from elasticsales/dropdowninteraction

Plays nicely with Bootstrap dropdowns
Merge pull request #269 from elasticsales/cleanup

Code cleanup; use CSS where possible
1.3.4
Add parentEl option information to the Readme
Fix 'chosenLabel' callback arg when Custom was chosen without clicking 'Custom' range.

Fixes case where you click the date textboxes to open the calendars
rather than first clicking the word "Custom Range".

Fixup to 430a9607cde57afeafc27ef89410f762924eb571
Merge pull request #279 from elasticsales/fix-custom-label

Fix 'chosenLabel' callback arg
Check against element

What is `$(options.parentEl)` checking for?

I think it's should check that element exist? In that case it should check  jQuery selector `length`.
Scope label styles to actual elements

It's hard to reset plugin styles, if you need to modify plugin container with own form labels.

Proposed patch scope styles on actual elements.
Update daterangepicker-bs3.css
 Set chosenLabel value correctly while clicking Calendar panel

If you set a custom date or a default date by clicking Calendar panel, the 'chosenLabel' should be set to correct value accroding to the active range button.
Merge pull request #286 from afc163/patch-1

 Set chosenLabel value correctly while clicking Calendar panel
Merge pull request #281 from ogonkov/patch-2

Scope label styles to actual elements
Merge pull request #280 from ogonkov/patch-1

Check against element