Fixed narrowing-results by regexp
Fix undefined variable: context
Merge pull request #596 from itchyny/master

Fix undefined variable: context
Merge pull request #594 from ichizok/fix-regexp-match

Fixed narrowing-results by regexp
Improve below prompt behavior
Fix quick match
Fix narrowing
Fix prompt_direction init
Fix set candidates problem
Fix candidates prompt problem
Fix prompt position
Fix toggle mark behavior
Improve auto_resize behavior
Fix auto resize behavior
Fix #595 prompt problems
Fix #593 default ignore pattern
Improve silent behavior
Fix #592 quick match behavior
Fix #598 insert enter behavior
Improve buffer sources