creating the meta branch
initial meta sheet implementation
remove pdb
Merge branch 'master' into meta_coding
Merge branch 'master' into meta_coding
Merge branch 'meta_coding' of https://github.com/chfw/pyexcel into meta_coding
re-factored readers
modified ods reader to support formatting
reach 100% coverage
code refactoring
code reduction
code refactoring
bug fix
remove useless local import
refactored odsreader
pep8
further optimization on excel file readers
get rid of useless imports
it is possible to modify an existing sheet
optimized update_columns