tools/pipbot: Untabify run_extern()
tools/pipbot: Refactor new branches to use git API

Issue #193.
tools/pipbot: Print summary in each function

Issue #193.
tools/mkrelease.sh: Don't perform git branching

Issue #193 and #203.
tools/pipbot: Refactor new releases to use git API

Issue #193.
tools/pipbot: Refactor pause to use git API

Issue #193.