Changes

* Double clicking & holding mouse down and dragging should select a word and add / subtract words from the selection (click down -> mouse up > mouse down and hold -> move mouse). White space and punctuation after a word should not be added to the selection with the preceding word; they should be treated as single characters.

* CMD-E should be mapped to 'Use selection for Find' like native mac apps do. This allows you to double click a word (or double click and drag to select multiple words), 'CMD-E' then 'CMD-G' to find the next occurrence (without opening any GUI find panel, window, or search field).