v0.7.5

Added

• support for a variety of Magellan data (see supported_datasets.md
  for specifics)

Changed

• sample types are now more permissive and allow spaces
• line endings are less strict and allow between 0-2 carriage returns

Fixed

• HiRISE EDRs are now only listed as notionally supported (rather than known
  unsupported and notionally supported)

Removed

• special case for mgs-rss data with IEEE REAL sample types (now supported in core
  functionality)