v0.8

Notable changes

• You can now write preloaded and potentially modified data with
  mne_bids.write_raw_bids by passing allow_preload=True. This is
  a first step towards supporting derivative files.
• mne_bids.BIDSPath now has property getters and setters for all BIDS
  entities. What this means is that you can now do things like
  bids_path.subject = '01' instead of bids_path.update(subject='01').
• We now support Deep Brain Stimulation (DBS) data.
• The way we handle anatomical landmarks was greatly revamped to ensure we're
  always using the correct coordinate systems. A new function,
  mne_bids.get_anat_landmarks, helps with extracting fiducial points from
  anatomical scans.
• When creating a BIDS dataset from FIFF files on macOS and Linux, MNE-BIDS
  can now optionally generate symbolic links to the original files instead of
  copies. Simply pass symlink=True to
  mne_bids.write_raw_bids. This can massively reduce the storage space
  requirements.