Merge branch 'v3'

Merge pull request #88 from lode/cleanup-and-document

Merge pull request #80 from lode/improving-linting

Merge pull request #77 from jasperwissels/prepare-php-84

Merge pull request #73 from lode/2.4.0

Merge pull request #66 from lode/2.3.0

Merge pull request #68 from jwissels/main

Merge pull request #61 from lode/fix-nesting-include-paths

Merge pull request #60 from lode/fix-request-with-partial-server-context

Merge pull request #56 from lode/request-helper