support migemo but it'll take too long time
add Easymoton_use_migemo
[WIP]Fix multibyte hundling
Fix Multibyte hundling!
Fix EOL bug
cosmetic change & refactoring
Now you can use migemo by Easymotion# f, F, t, T function in addition to
Easymotion#S() function
Modify Easymotion_use_migemo default value to 0