<done>
- load and save data from localStorage
- add closed tab to the first group

<do next>
- release tabs of the selected group
- implement delete button
- implement shortcut key
- design css
<done>
 - implement release and close a group function

<do>
 - implement release and close a tab function
 - implement trash can button
 - design css
temp
<done>
 - implement delete button
 - fix drag and drop problem
 - implement tag release and retain function

<do>
 - create group if enter is clicked when cursor is at group name text box
 - design css
<done>
 - create new group with enter key

<do>
 - select weather releasing tabs in the current window or new window
 - implement shortcut key
 - design css
<done>
 - implement shortcut
 - fix the problem which tabs don't show up when release a group and put it back and release again.

<do>
 - make all tab's arrow following group's arrow when a group is close.
 - implement shortcut to show popup
<done>
 - toggle the destination of tabs(current window or others)
  - close tabs in the other window
  - release and close a tab

 - the problem which title charactors are ascii or multi
<done>
 - fix the problem which tabs order is reseted when popup reshow up
  - fix group - group arrangement
  - tab-tab, tab-group problem left
  - tab-tab in different groups
<done>
 - remove redundant part
<done>
 - remove redundant part
 - delete unnecessary files
 - push it to github
Merge branch 'master' of github.com:r-nmt000/SimpleTabGrouping