Drag'n'Drop files from Finder to `fileTableView`
Choose syntax highlighting mode for response via combo box
Merge pull request #22 from ericbroska/master

Prevent `-minus{$TableName}Row:` from catching an exception
Merge pull request #23 from ericbroska/res1

Drag'n'Drop files from Finder to `fileTableView`
Make sure that new row in files table is mutable so that key can be edited, make file select box and drag-n-drop files go through same code path for adding a file to the files list
Make gzip column in Files table resize with table so the column doesn't disappear, adjust stickiness of response syntax dropdown box so it adjust nicely when window gets smaller
Updating readme and release notes
Update syntax chooser box with automatically selected syntax when a new response finishes loading