
2016.12.26
+ add cmd: Reverse lines
+ add cmd: Shuffle lines
+ add cmd: Extract dups
+ add cmd: Extract dups, ignore case
+ add cmd: Extract unique
+ add cmd: Remove dups
+ add cmd: Remove dups + origins
+ add cmd: Remove adjacent dups
+ add cmd: Remove blanks
+ add cmd: Remove adjacent blanks
* rename opt sort_all->allow_all
