Update Worksheet.php getStyleByColumnAndRow()

http://phpexcel.codeplex.com/discussions/263626

$objPHPExcel->getActiveSheet()->getStyleByColumnAndRow(1, 2, 5, 2)->applyFromArray($styleArray);

It is very convenient in cycles
Fixes html entities to prevent parsing error of generated documentation.

The html output contained "<style> and </style>" which causes a parse
error on stricter html validators. The solution was to swap < and > for
the equivalent html entities &lt; and &gt; respectivelly.

Signed-off-by: André Tannús <atannus@epungo.com.br>
Change the getter/setter for zeroHeight to camel case
XML External Entity (XXE) Processing

https://www.owasp.org/index.php/XML_External_Entity_(XXE)_Processing

change simplexml_load_file to
simplexml_load_string(file_get_contents()) because load_file doesn't
work when
http://php.net/manual/en/function.libxml-disable-entity-loader.php is
true
Case-sensitivity error
Merge pull request #334 from atannus/develop

Fixes html entities to prevent parsing error of generated documentation.
Fix for nested collapsed grouping when writing BIFF-format files, courtesy of ShadowEDX
Merge branch 'develop' of https://github.com/PHPOffice/PHPExcel into develop
Merge pull request #405 from ymaerschalck/develop

XML External Entity (XXE) Processing
Merge pull request #379 from frost-nzcr4/ft-camelcase

Change the getter/setter for zeroHeight to camel case
Update change log
Bugfix: Work Item GH-350 - Keep/set the value on Reader _loadSheetsOnly as NULL, courtesy of Restless-ET
Merge pull request #269 from bolovincev/patch-1

Update Worksheet.php getStyleByColumnAndRow()
Feature: (bolovincev) Work Item GH-269 - Update Worksheet.php getStyleByColumnAndRow() to allow a range of cells rather than just a single cell
Bugfix: Work Item CP18105 - Loading an Excel 2007 spreadsheet throws an "Autofilter must be set on a range of cells" exception
Fix to jpgraph path for Chart Rendering tests
Use normal array syntax to support PHP <5.4
Merge pull request #412 from z38/develop

Use normal array syntax to support PHP <5.4 (fixes #411)
New example demonstrating linked drop-down validation lists
In-code comments and add data for linked validators example
Add new example to runall