v0.0.8 Release

#81 Remove interfaces and channel usage
#80 Rename match exps
#79 Louis/interface swap
#78 exhaustive search for os-release
#77 fix-nil-dists
#76 all: regroup imports consistently
#75 consolidate coalescers to a single impl. add basic test
#74 add Name interface method to Matcher
#73 cctool: add a tool for interacting with claircore directly