2.0.0

Breaking

• PHP ^8.2
• portphp/portphp ^2.0
• Writer methods use : void return types
• Reader iterator methods use PHP 8 return types
• phpoffice/phpspreadsheet: ^1.29 || ^2 || ^3 || ^4 || ^5

Other

• GitHub Actions CI + Dependabot
• PHPUnit 9
• README updates; Travis/Scrutinizer removed

See UPGRADE-2.0.md.

1.0.1

• Fixed count warning on PHP 7.2+ (#3, thanks to @SosthenG)

1.0.0

Merge pull request #2 from lsmith77/spreadsheet

replace excel with spreadsheet as the underlying lib supports different spreadsheet formats