0.29.2

Fixed

• Travis did add the webservice executables to the release
• cargo release did not release all crates

Changed

• Node IDs in matches don't have the salt:/ prefix anymore

Added

• Add non-tokenized primary text segments as special labels "tok-whitespace-before" and "tok-whitespace-after" to the existing token
  when importing from relANNIS. This allows to re-construct the original relANNIS primary text by iterating over all token in order
  and be prepending or append these labels to the token values.
• Add a REST based web-service replacing the legacy annis-service