Merge pull request #55 from wecing/master

A better f-mode!
fix: if links selected by continuous f-mode is not tagged as <a>,
continuous mode doen't work
support extended f-mode
add GoExtFMode command
add ; key to GoExtFMode, add --focus option to GoExtFMode command
add yank and yanktext for extended f-mode
remove auto generated js files
fix: command box doesn't pop up on some conditions

the way checking if the current window is top is wrong
jquery version update to 2.0.1, jquery-mousewheel version update to 3.1.3
fix: relative URL to absolute in ext f mode
bump version to 0.12.0