update version, removed unrelated methods from ezQuery class to globa…

…l functions only

- added/tested two additional security related functions, `is_traversal` and `sanitize_path` to go along with `clean_string`

corrections/updates, additional function, and renaming

Update docs/doc-blocks - ready for version release,

Update ezFunctionsTest.php

Code cleanup, refactor for PHP 8 compatibility, and bug fixes discove…

…red in doing so

- bug fixes, prior to PHP 8, `**@**` silenced errors which this library used to return `**false**` instead, that is not no longer possible with PHP 8
- Linux and Windows CI tests move to GitHub Actions
- General code style fixes
- merged bug fix ezSQL#199
- fixed tests in issue ezSQL#200, and corrections for PR ezSQL#201

Merge pull request ezSQL#186 from dpDesignz/where-group

Where group

Merge pull request ezSQL#180 from dpDesignz/table-joins

fixBug: Conditional Stacked Functions in selecting

Merge pull request ezSQL#170 from dpDesignz/master

continue fixBug: Error when trying to use $db->vardump()

Merge pull request ezSQL#166 from dpDesignz/master

fixBug: Error when trying to use $db->vardump()

Merge pull request ezSQL#160 from hubaishan/fixpgsql

fixBug: Creating default object from empty value in pgsql