* add clef as an external signer
* adjust signing in memory

Broad-spectrum refactor of the resolver package.

- removed TLD constraints (all TLDs are now accepted)
- merged resolver service into multiresolver
- simplified client code
- refactored tests
- added MultiError
- other minor fixes

* add opentracing instrumentation to http package

- blocklisting in p2p layer and libp2p implementation

* bump bee version to 0.3.0

Remove old version of go-ethereum.

Remove connect notify from p2p interfac

Break at 3 bootnodes

* Add individual tags persistence

Add ens resolver client and integrate resolver into the api package

* Add standalone flag

Co-authored-by: Metacertain <metacertain@gmail.com>

* seekjoiner: add pluggable decryption

* tags: remove anonymous field

* add encryption pipeline (#613) + integration (#618)

* integrate splitter pipeline into the api

* check keys and create key prompt

* pipeline splitter without integration

Multiresolver allows to resolve a name using multiple resolver chains.
Chains are selected using the TLD of the name (if no TLD is present, we use the default).
A chain resolves a name by consecutively calling Resolve on each element.
The name is resolved when the first resolver succeeds. It fails if all resolvers fail.

* removed chunk type test in IsPotential, local existance check in repair

* removed chunk type test in IsPotential, local existance check in repair

* removed logging info

* fixed testcase for reparing chunk that is not present

* fixed review commenst by Elad