RMLio/rmlmapper-java: v6.0.0

Changed Run all tests in parallel on CI infrastructure Upgrade Function Agent to v0.1.0 Fixed Upgrade postgresql JDBC driver to 42.3.3 Rename logback.xml to logback-test.xml in test resources (see issue 240) If exception occurs while mapping data, already processed data gets written to output file Properly close resources such as input streams Github release notes are now properly extracted Discard UTF Byte-Order-Marks (BOM) (see issue 171) Dropped lib directory for functions as we now use a separate FnO Function Agent Added Add support for WoT OAuth2 Security Scheme (see issue 212) IDLabFunctions: added functions lookup and lookupWithDelimiter IDLabFunctionsTest: added unit tests for lookup functions IDLabFunctionsTest: relocate csv files used by tests for lookup function IDLabFunctions: silence stack trace CSVW: filter out rows with a comment prefix Output file path now gets checked before the mapping .gitignore: ignore vscode files pom.xml: add Saxon-HE v11.3 dependency XMLRecord: adjusted to use Saxon XMLRecordFactory: adjusted to use Saxon SaxNamespaceResolver: added class for resolving namespaces in Saxon. This fixes (#154)[https://github.com/RMLio/rmlmapper-java/issues/154]. Added unit tests for XPath 2/3 expressions and functions Loggers across the codebase have been updated to use parameterized strings Add support for WoT OAuth2 Security Scheme (see issue 212) Integration of independent function handle