Version 1.1.0

- add new feature
     : open a file under cursor in new tab window.
     : register custom "cc" command with g:qfenter_cc_cmd
Version 1.1.1:     - change default mapping for "open a file in a new tab"
Version 1.2.0

    - now, Quickfix window is automatically opened after "open in a new tab"
    - add options about Quickfix auto opening
    - add one more default mapping for "open in a new tab"
    - code refactoring
Version 1.3.0

improve features
  - improve auto quickfix open when 'open in new tab'
    - restore view(cursor position, scroll..) of quickfix window to auto-opened quickfix window
    - restore size of quickfix window to auto-opened quickfix window
    - now you don't need to provide g:qfenter_copen_modifier option. QFEnter now smartly determine whether the new quickfix window is botright or topleft, vertical or horizontal.
  - change g:qfenter_ttopen_map option name to g:qfenter_topen_map (backward compatibility maintained)
  - remove '<Tab><Tab>' from default mapping
Version 2.0.0

- visual mode support to open multiple Quickfix items at once
- add option to keep focus in Quicifix window after opening items  (g:qfenter_keep_quickfixfocus)
- support :cnext and :cprev command to open items
Version 2.1.0

	- subdivide g:qfenter_keep_quickfixfocus option for each command.
	  e.g. g:qfenter_keep_quickfixfocus.open, g:qfenter_keep_quickfixfocus.cnext,
	  g:qfenter_keep_quickfixfocus.cprev
	- bug fix : not updated window for already opened file when g:qfenter_keep_quickfixfocus==1
	- thanks for mMontu!