support writing datetime.datetime

#28

Breaking release

new plugin system.

Python 3.6+ only.

v0.5.3

Find 0.5.3 in changelog for more details

v0.5.2

Find 0.5.2 in changelog for more details

v0.5.1

Find 0.5.1 in changelog for more details

Performance boost when handling file in memory in python2

pyexcel-io 0.5.0 uses cStringIO instead of StringIO in python2.

And this version had its data type conversion code relocated in pyexcel_io.service.

Update dependency

to use pyexcel-ezodf v0.3.3, a followup of ezodf 0.3.2

update plugin interface

see more details in changeling

maintenance release

#8

recognise currency as text

v0.3.1

mention python version 3.3