maintenance release

fix #24

Maintenance release

#26

Maintenance release

fix #23

Two new features

#21
#22

deliver pagination when reading huge data files

more details see change log

support pyexcel-cli

See changelog.rst for more details

auto import pyexcel plugins

see changelog.rst

Performance optimization release

yield keyword in place

Performance optimization release

1. the performance optimization is surrounding 'yield' keyword to mimize overhead brought by pyexcel-io
2. Please try it and give me your feedback.

Maintenance release

bug fix #6
minor code refactoring