Update Various Argument Defaults

Added

• Documentation saying what return codes are given and what they mean.

• For #15, added ability to specify output format for display-config.

• Added 3rd Party Licenses document

Changed

• In the docs, java -jar degasolv-<version>-standalone.jar changed to
  degasolv with added note for clarity

• For #13, return code for resolve-locations changed to 3 when dependency
  resolutions occur to distinguish them from normal "you got the argument
  string wrong" errors

• Default --{enable|disable}-error-format set to enabled for
  resolve-locations and
  query-repo.

• Default for --list-strat option for resolve-locations set to lazy, a
  much saner default.

• Option pack v1 added to help administrators
  keep compatibility with version 1 of degasolv if required.

• Default for the --version-comparison option when --package-system is
  degasolv set to semver for generate-repo-index, resolve-locations and
  query-repo.

• Removed less-than-useful warning about absent config files.

Fixed

• Fixed #14, "Degasolv pulls in X"

• Fixed bug where display-config didn't allow the user
  to specify valid options for other things, now it does

• Fixed bug where index.dsrepo didn't generate anything except
  an empty map inside the file. This was completely broken.

• Fixed #6, "If one config file fails to load, the rest do as well"

• Fixed #9, "Heading for 'Specifying Subproc Executable' is wrong in docs"

• Fixed #10, "How do you specify requirements of a package (deps) in the output
  of a subproc to degasolv?"