v0.9.1

Added

• Connect Administrative Records with Bundle and BundleBuilder.
• Make PingAgent configurable as a dtnd Agent.
• Simple "dtn-tool ping" command to interact with a PingAgent.
• Reassembly support for fragmented Bundles in the Store.

Changed

• Structural refactoring:
  • Move all Go packages into the pkg directory.
  • Renamed bundle package to bpv7.
    This new name better describes that it is about bpbis and not just
    bundles. Furthermore, this allows to use the obvious variable name
    "bundle" for a bpv7.Bundle.
  • Unlink discovery from Core.
  • Move custom routing-extension block to the bpv7 package,
    where they shall reside with their brethren.
• Bump draft-ietf-dtn-bpbis version from 26 to 31.
  • Restrict dtn URI node name to [\w-._]+, ietf-dtn-bpbis-27.
  • "Block unintelligible" status report is replaced by new "Block
    unsupported" status report code for non-processable blocks.
• Bump draft-ietf-dtn-tcpclv4 version from 21 to 23.
• Bump go-dependencies
• Set Linux-specific socket options for a MTCP Client's connection to
  detect an abrupt connection loss.
• Check for existence of ExtensionBlock before adding a new one.
• Have Bundle and BundleDescriptor return the same type
  when calling ID-method.

Fixed

• Include nil-check for EndpointID's internal representation.
• Close a MTCP Client after sending a keepalive failed.
• Enable parsing of primary blocks without a CRC value. When creating,
  an attempt is made to enforce a CRC, since this is necessary in the
  absence of an integrity block (BPSec).
• Exclude the peer discovery Manager's function field from the
  JSONFormatter used by logrus. Otherwise, the struct cannot be encoded.
• Set the default DTLSR edge-cost > 0