minor fixes for Reflection API updated inline comments
added new libxl 3.6.0 methods ExcelSheet::hyperlinkSize(), ExcelSheet::hyperlink(), ExcelSheet::delHyperlink(), ExcelSheet::addHyperlink(), ExcelSheet::mergeSize(), ExcelSheet::merge(), ExcelSheet::delMergeByIndex(), ExcelSheet::splitInfo()
reverted format pass-by-value for ExcelSheet::read() to pass-by-reference (introduced in 2fd6e31) to pass tests, fixed double tab indentation
added tests for new methods in libxl 3.6.0, changed php documentation to reflect pass-by-ref for ExcelSheet::read()
Merge pull request #75 from johmue/master

support for new methods of libxl 3.6.0