1.5.0

Fixed

• RelANNIS version 3.3 files with segmentation might also have a missing "span" column.
  In case the "span" column is null, always attempt to reconstruct the actual value from
  the corresponding node annotation instead of failing directly.

Changed

• Avoid unnecessary compacting of disk tables when collecting graph updates during import.
  This speeds up both the GraphML and the relANNIS importer and can also reduce the
  used main memory during import.
• Use release optimization of some of the performance sensitive crates even for debug builds.
  This allows faster builds and debugging of our own code, while balancing performance.