all: refactor store cleaning
app: first stab at evt-level concurrency
worker: bailout when input channel has been closed
app: setup GOMAXPROCS
app: proper concurrent evt-loop
app: cosmetics
all: fix race on quit. nprocs=0 means sequential
Merge pull request #12 from go-hep/dev/nprocs

dev/nprocs (fix #4)
app: refactor print-dataflow
app: demote print-dataflow to DEBUG
app: rename run_seq and run_workers
worker: govet
job: govet
make: update makefile
test: first import
test: make taskXYZ configurable
test: add TestSimpleConcApp+TestDuplicateProperty
fwk-new-comp: fwk.Error -> error
test: add TestInputStream
app,worker: leak local errch