v2.0.0

Note

• This release introduces a new file storage format.
• GSD >= 2.0 can read and write to files created by GSD 1.x.
• Files created or upgraded by GSD >= 2.0 can not be opened by GSD <
  1.x.

Added

• The upgrade method converts a GSD 1.0 file to a GSD 2.0 file in
  place.
• Support arbitrarily long chunk names (only in GSD 2.0 files).

Changed

• gsd.fl.open accepts None for application, schema, and
  schema_version when opening files for reading.
• Improve read latency when accessing files with thousands of chunk
  names in a frame (only for GSD 2.0 files).
• Buffer small writes to improve write performance.
• Improve performance and reduce memory usage in read/write modes
  ('rb+', 'wb+' and ('xb+').
• C API: functions return error codes from the gsd_error enum.
  v2.x integer error codes differ from v1.x, use the enum to check.
  For example: if (retval == GSD_ERROR_IO).
• Python, Cython, and C code must follow strict style guidelines.

Removed

• gsd.fl.create - use gsd.fl.open.
• gsd.hoomd.create - use gsd.hoomd.open.
• GSDFile v1.0 compatibility mode - use gsd.fl.open.
• hoomdxml2gsd.py.

Fixed

• Allow more than 127 data chunk names in a single GSD file.