Modify send code to use a debug tag that includes a msgDigest. This is set by higher level sending functions for debugging purposes

Hotfix/fast sending

See merge request !424

# Conflicts:
#   go.mod

# Conflicts:
#	go.mod

Fix share URL

See merge request !423

instrumented node registration and made only 4 paralelell node registrations

See merge request !418

added a print denoting the number of registered nodes and made node registeration time prints trace to make it less noisy

moved all node cert handling into the optional code and made it only attempt to register with a node twice