* many performance optimizations

* fix: macro expansion keys are now case insensitive

* optimization: switch from strconv to ascii runes

* optimization: switch from append to strings.Builder

* remove error format from variables.Parse

* refactor macro expansion engine

* fix: fix byte range tests and code

* fix: remove dummy println

* refactor validatebyterange

* fix: capture action

* fix: codeql 'vulnerability' on validateByteRange