Merge pull request #41 from tawk/release/support-version-68

supported version bump to 6.8; version bump to 0.9.2

Update GitHub Actions cache action from v2 to v3 in release workflow

update changelog & version bump

update changelog; supported version to 6.7; version bumped to 0.8.7

Merge pull request #37 from eug-L/fix/header-information

fix/header-information

Merge pull request #36 from eug-L/dynamic-properties-deprecation

Fixed dynamic properties deprecation

Merge pull request #33 from alvinjohnsonso/fix/pattern-matching-toolt…

…ip-display

- Fixed pattern matching display tooltip
- Updated supported version

Merge pull request #32 from alvinjohnsonso/fix/php-56-compatibility-i…

…ssue

fix/php-56-compatibility-issue
* updated tawk-url-util lib to 2.0.1;
* version bumped to 0.7.1;

Merge pull request #31 from alvinjohnsonso/readme-upgrade-notice

readme-upgrade-notice
- added upgrade notice section

Merge pull request #18 from alvinjohnsonso/feature/request-auth-valid…

…ation

feature/request-auth-validation
- used application/json content type for ajax requests
- added nonces to do CSRF checking
- added user access checks for ajax urls