An RPM packager for perl modules

Changes for 1.15 - 2024-02-23

• Changed RELEASE_TESTING variable. Now use a release-specific testing variable rather than RELEASE_TESTING. See GitHub #17 in my Locale-Codes module on GitHub for details.
• Fixed bug where passing in no arguments resulted in a warning. GitHub #10
• Fixed a bug where detecting Module::Build::Tiny was skipped if the --install-type parameter passed in. GitHub #16.