sleepy processes (#58)

* naive sleepy anatevka

* sleepy nodes

* fix unused slots

* drop now arg from event callback

* bump version + dependency

* add comment

* update readme

* Increase timeout to 1200 for the 20x20 blossom suite tests

* Increase timeout to 2000 for the 20x20 blossom suite tests

* Rename sow-spacelike-graph to sow-graph

* Improve some documentation in tests/blossom.lisp and tests/cases.lisp

* Missed a spot with the sow-spacelike-graph renaming:

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Co-authored-by: Peter Karalekas <peter@karalekas.com>

Bump version to v1.0.1

initial commit

Co-authored-by: Eric Peterson <peterson.eric.c@gmail.com>
Co-authored-by: Peter Karalekas <peter@karalekas.com>