doc(release-notes): Updated release notes.
## Version 6.4.0
### New features
+* Detect now supports projects managed by the Cargo package manager.
+* Detect now supports projects managed by the Poetry package manager.
### Changed features
* Eliminated any need for the ${blackduck_product_name} Global Code Scanner overall role.
* The CLANG detector collects any dependency files not recognized by the Linux package manager that reside outside the source directory (the directory containing the compile_commands.json file),
and writes them to the status.json file.
-* Detect now supports projects managed by the Poetry package manager.
* Added the property [detect.blackduck.signature.scanner.copyright.search](../properties/configuration/signature scanner/#signature-scanner-copyright-search-advanced).
-* Detect now supports projects managed by the Cargo package manager.
### Resolved issues
+* (IDETECT-2019) Resolved an issue where the pip inspector would not be able to parse the requirements.txt file if pip's version was >= 20.1.
* (IDETECT-2034) Resolved an issue that would cause a NullPointerException when ${solution_name}'s initial attempt at generating a code location name produced a code location name greater than 250 characters and either code location prefix or code location suffix is not set.
## Version 6.3.0
