Fix bug where sessions that are broadcasting were lost when toggling traditional fullscreen
Fix bug where clicking the gear icon in the session title didn't open a context menu
Add 'partial' types for x-of-screen window types that respect row/column setting. Clean up x-of-screen code generally.
Scroll screen into history when ED (erase in display) is called with the below-the-cursor mode and the cursor is at 0,0. Makes entering vim save cursor state with 'screen' term, as used by tmux et al
Merge branch 'master' of https://github.com/gnachman/iTerm2
cited from http://d.hatena.ne.jp/mrkn/20101031/1288487978