bpf - change __inline to __always_inline to force inlining of all fun…

…ctions

The 4.9 probe broke because the new flow_sample_update was not inlined.

Merge pull request #34 from ti-mo/drop-invalid-conn-samples

Only sample conns inserted into the conntrack table

go.sum - tidy stale ebpf dependency

pkg/bpf - downsize flow_id to 32 bits, use Hasher sync.Pool

Merge pull request #26 from ti-mo/boottime/recalculate

Recalculate boot time offset periodically

Magefile - set GOVERSION in Release()

Merge pull request #25 from ti-mo/ci/goreleaser

Introduce goreleaser for binary, deb and rpm builds

cmd/config.go - fix default sink config type declaration