PHPOffice/PHPPresentation

# 0.9.0 - 2017-07-05

## Bugfix
- PowerPoint2007 Writer : Margins in table cell - [@Progi1984](https://github.com/Progi1984) GH-347

## Changes
- PowerPoint2007 Writer : Write percentage values with a trailing percent sign instead of formatted as 1000th of a percent to comply with the standard - [@k42b3](https://github.com/k42b3) GH-307

## Features
- PowerPoint2007 Writer : Implemented XSD validation test case according to the ECMA/ISO standard - [@k42b3](https://github.com/k42b3) GH-307
- PowerPoint2007 Writer : Implement visibility for axis - [@kw-pr](https://github.com/kw-pr) [@Progi1984](https://github.com/Progi1984) GH-356
- PowerPoint2007 Writer : Implement gap width in Bar(3D) Charts - [@Progi1984](https://github.com/Progi1984) GH-358