add protean utils, echo server
add multiple arity to make-request sim function
Merge branch 'placeholders' into develop
updates to README
bump version to 0.9.0-pre.7
use pre.7 in brogrammer install script
Merge branch 'placeholders' into develop
Merge branch 'placeholders' into develop
update README reference to sample codex
update build scripts with codex/sim split
rename sample-codex, relegate until we decide what to do with it
Merge branch 'placeholders' into develop
Merge branch 'placeholders' into develop

Conflicts:
	src/protean/core/transformation/sim.clj