* swarm/storage/mru: Add embedded publickey and remove ENS dep
This commit breaks swarm, swarm/api...
but tests in swarm/storage/mru pass
* swarm: Refactor swarm, swarm/api to mru changes, make tests pass
* swarm/storage/mru: Remove self from recv, remove test ens vldtr
* swarm/storage/mru: Remove redundant test, expose ResourceHash mthd
* swarm/storage/mru: Make HeaderGetter mandatory + godoc fixes
* swarm/storage: Remove validator prefix for metadata chunk
* swarm/storage/mru: Use Address instead of PublicKey
* swarm/storage/mru: Change index from name to metadata chunk addr
* swarm/storage/mru: Refactor swarm/api/... to MRU index changes
* swarm/storage/mru: Refactor cleanup
* swarm/storage/mru: Rebase cleanup
* swarm: Use constructor for GenericSigner MRU in swarm.go
* swarm/storage: Change to BMTHash for MRU hashing
* swarm/storage: Reduce loglevel on chunk validator logs
* swarm/storage/mru: Delint
* swarm: MRU Rebase cleanup
* swarm/storage/mru: client-side mru signatures
Rebase to PR #668 and fix all conflicts
* swarm/storage/mru: refactor and documentation
* swarm/resource/mru: error-checking tests for parseUpdate/newUpdateChunk
* swarm/storage/mru: Added resourcemetadata tests
* swarm/storage/mru: Added tests for UpdateRequest
* swarm/storage/mru: more test coverage for UpdateRequest and comments
* swarm/storage/mru: Avoid fake chunks in parseUpdate()
* swarm/storage/mru: Documented resource.go extensively
moved some functions where they make most sense
* swarm/storage/mru: increase test coverage for UpdateRequest and
variable name changes throughout to increase consistency
* swarm/storage/mru: moved default timestamp to NewCreateRequest-
* swarm/storage/mru: lookup refactor
* swarm/storage/mru: added comments and renamed raw flag to rawmru
* swarm/storage/mru: fix receiver typo
* swarm/storage/mru: refactored update chunk new/create
* swarm/storage/mru: refactored signature digest to avoid malleability
* swarm/storage/mru: optimize update data serialization
* swarm/storage/mru: refactor and cleanup
* swarm/storage/mru: add timestamp struct and serialization
* swarm/storage/mru: fix lint error and mark some old code for deletion
* swarm/storage/mru: remove unnecessary variable
* swarm/storage/mru: Added more comments throughout
* swarm/storage/mru: Refactored metadata chunk layout + extensive error...
* swarm/storage/mru: refactor cli parser
Changed resource info output to JSON
* swarm/storage/mru: refactor serialization for extensibility
refactored error messages to NewErrorf
* swarm/storage/mru: Moved Signature to resource_sign.
Check Sign errors in server tests
* swarm/storage/mru: Remove isSafeName() checks
* swarm/storage/mru: scrubbed off all references to "block" for time
* swarm/storage/mru: removed superfluous isSynced() call.
* swarm/storage/mru: remove isMultihash() and ToSafeName functions
* swarm/storage/mru: various fixes and comments
* swarm/storage/mru: decoupled cli for independent create/update
* Made resource name optional
* Removed unused LookupPrevious
* swarm/storage/mru: Decoupled resource create / update & refactor
* swarm/storage/mru: Fixed some comments as per issues raised in PR #743
* swarm/storage/mru: Cosmetic changes as per #743 comments
* swarm/storage/mru: refct request encoder/decoder > marshal/unmarshal
* swarm/storage/mru: Cosmetic changes as per review in #748
* swarm/storage/mru: removed timestamp proof placeholder
* swarm/storage/mru: cosmetic/doc/fixes changes as per comments in #704
* swarm/storage/mru: removed unnecessary check in Handler.update
* swarm/storage/mru: Implemented Marshaler/Unmarshaler iface in Request
* swarm/storage/mru: Fixed linter error
* swarm/storage/mru: removed redundant address in signature digest
* swarm/storage/mru: fixed bug: LookupLatestVersionInPeriod not working
* swarm/storage/mru: Unfold Request creation API for create or update+create
set common time source for mru package
* swarm/api/http: fix HandleGetResource error variable shadowed
when requesting a resource that does not exist
* swarm/storage/mru: Add simple check to detect duplicate updates
* swarm/storage/mru: moved Multihash() to the right place.
* cmd/swarm: remove unneeded clientaccountmanager.go
* swarm/storage/mru: Changed some comments as per reviews in #784
* swarm/storage/mru: Made SignedResourceUpdate.GetDigest() public
* swarm/storage/mru: cosmetic changes as per comments in #784
* cmd/swarm: Inverted --multihash flag default
* swarm/storage/mru: removed Verify from SignedResourceUpdate.fromChunk
* swarm/storage/mru: Moved validation code out of serializer
Cosmetic / comment changes
* swarm/storage/mru: Added unit tests for UpdateLookup
* swarm/storage/mru: Increased coverage of metadata serialization
* swarm/storage/mru: Increased test coverage of updateHeader serializers
* swarm/storage/mru: Add resourceUpdate serializer test
Balint Gabor
Javier Peletier