docs: Add/update CHANGELOG.

docs: Update changelog.

docs: Add Changelog.

Signed-off-by: Pol Dellaiera <pol.dellaiera@protonmail.com>

Merge pull request #8 from loophp/fix-static-analysis-tools-warnings

Fix static analysis tools warnings

Merge pull request #6 from loophp/update-type-declarations-everywhere

Update type declarations in src/

Add missing tests and increase code coverage.

Update README file.

Initial commit.