sexpify rock
sexpify router
sexpify static
sexpify app
add formatting space
update comment
interface for phys_set

Phys_set is necessary for introspecting a running opium app - we'd like
to know the names of the middleware we are currently running.
no need for ounit lower bound
proper name for routes test
prj directive for merlin
phys map implementation
some tests for the phys map
change from set to map interface
update _oasis for phys_set
fix merlin dir structure
add find test
propose better interface for phys_set
update tests for new interface
imlpement new interface for phys_set

also some formatting fixes
better formatting of exceptions