abduco a tool for session {at,de}tach support

abduco provides session management i.e. it allows programs to be run independently from their controlling terminal. That is programs can be detached - run in the background - and then later reattached. Together with dvtm it provides a simpler and cleaner alternative to tmux or screen. abduco is in many ways very similar to dtach but is a completely independent implementation which is actively maintained, contains no legacy code, provides a few additional features, has a cleaner, more robust implementation and is distributed under the ISC license