An entire row or column. Click the row or column heading. Row heading. Column heading. You can also select cells in a row or column by selecting the first cell and then pressing CTRL+SHIFT+ARROW key (RIGHT ARROW or LEFT ARROW for rows, UP ARROW or DOWN ARROW for columns).
If you like this, you might also like hihat. It is very similar, but more focused on running and testing browser applications. Hihat uses browserify to bundle everything into a single source file, and uses watchify for incremental file changes. In some ways, devtool is a spiritual successor to hihat.
DevOps is more than just a tool or a process change; it inherently requires an organizational culture shift. This cultural change is especially difficult because of the conflicting nature of departmental roles. Operations seeks organizational stability; developers seek change; and testers seek risk reduction.