v0.5.0

New features:

• Allow globally setting the root directory with an environment variable (#46)
• Added a function to check if EEG data can be rereferenced
• Automatically determine montage and localization numbers when possible (#77)
• Added a fromfile method to classes based on BaseCMLReader to more
  easily directly load specific data types (#79)

Improvements:

• Added support for reading EEG data from restarted sessions (#68)
• Improved the ergonomics of passing a scheme keyword argument to
  rereference EEG data (#70)
• Make channel filtering via the scheme keyword argument more explicit (#80)

Bug fixes:

• Handle loading PS4 events (#47)
• Fixed paths with respect to montage/localization confusion (#62)
• Fixed the CSVReader to correctly read jacksheets (#65)
• Handle gaps in contact numbers when reading EEG data (#63)