use vimproc#system() if available
add migemo utilities
add a variable to control wether use migemo or not
add migemo support

    This has a bug when \ is input
use migemo only if an alphabet is input
add utility to check a multibyte character
don't use migemo when a current line doesn't contain any multibyte character

    This feature is enabled when g:clever_f_across_no_line is 1
improve a default value of g:clever_f_use_migemo

migemo search seems to be heavy in some cases
add some lines for my favorite layout
cache a previous pattern while repetition
fix initial value of s:first_move[mode]
todo to make migemo support faster
tiny refactoring
display encoding when an error occurs
use guard and improve travis script using vim-operator-clang know-how
remove a pattern cache because all migemo regex patterns are loaded at first
add migemo dictionaries for cp932, euc-jp, utf-8
remove a debug code.
use prepared dictionaries

This removes migemo dependency and improves a performance
cmigemo is no longer needed