re-enable 1.8.7 travis and pin rubyzip at 0.9.9
docs for ColBreaks
sorry folks 1.8.7 is just simply a no-go
Page Breaks - round one

This sets up the basic col and row break creation and serialization.
You can specify either a string reference like "C7" or provide an
Axlsx::Cell instance to specify the break point.

Serialization is working cleanly but excel does not automatically
render those breaks yet. You need to switch to page preview mode.
Fixes for anchor swapping when adding images. - Two -> One swap still pending.
repair pivot table data ref populate and bring coverage back up to 100%
Bring documentation up to 100%
remove stupidity, remove warning
Add support for automatically adjusting serialized times and dates to account for the zone
version 2.0.0
initialize subtotal to remove warnings
remove unused test vars
update README and CHANGE log for pre-release
remove coverage task as it happens automatically when specs are run
fix contributors link
add .yardopts_guide to gem
bump the version and get onto 1.0.0