tools/sloccount: Show section totals

Issue #73.
tools/wokflow: Reword --help description

Issue #76.
tools/workflow: Add description for 'pause' command

Issue #76.
tools/workflow: Add 'pause' command

Issue #76.
tools/workflow: Always allow actions on a dirty tree

Issue #77.
tools/workflow: Add single-character command shorthand

Issue #78.
tools/workflow: Document new shorthand commands

Issue #78.