Python 0.3.0

New features

• Support for file-like objects in dump/load and remove
  file seeks. This allows reading from pipes/FIFOs etc
  (@grahamgower #88).

• Add loads and dumps functions that operate on
  strings (@jeromekelleher, #88)

Breaking changes

• The filename named argument to load/dump has been changed to
  file to reflect the support for file objects.

• Minimum python version is now 3.6.