Manual pages for stg and each of its sub-commands.

• stg-branch
• stg-clean
• stg-commit
• stg-completion
• stg-delete
• stg-diff
• stg-edit
• stg-email
• stg-export
• stg-files
• stg-float
• stg-fold
• stg-goto
• stg-help
• stg-hide
• stg-id
• stg-import
• stg-init
• stg-log
• stg-name
• stg-new
• stg-next
• stg-patches
• stg-pick
• stg-pop
• stg-prev
• stg-pull
• stg-push
• stg-rebase
• stg-redo
• stg-refresh
• stg-rename
• stg-repair
• stg-reset
• stg-series
• stg-show
• stg-sink
• stg-spill
• stg-squash
• stg-sync
• stg-top
• stg-uncommit
• stg-undo
• stg-unhide
• stg-version
• stg