Released SimpleXLSX 1.0

https://github.com/shuchkin/simplexlsx
10 years have passed, it would be time already.

* 1.0 VERSION: Memory and styles
* PHP 5.5+, namespace Shuchkin, 4 spaces indents
* memory: added readRows() and readRowsEx() returns Generator. Help to read huge files
* memory: in my tests ~100k rowsEx() used 880 MB, readRowsEx() used 162 MB
* memory: added SimpleXLSXEx companion class for extract styles, used in rowsEx & toHTMLEx() only
* styles: alignment, fonts, fills, borders
* styles: rowsEx() return style info, cell width & height, css to apply in TD tag 
* styles: added toHTMLEx() to export worksheet to HTML formatted table
* fixed author in license.md
* fixed examples