Rework shading to upgrade embedded ASM classes to Java 8#32
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What Does This Do
The original ASM classes target Java 1.5 and don't contain stack-map information.
Upgrading their bytecode to Java 8 and generating stack-maps means they can be verified faster at runtime. To do this we replace the shadow plugin with a simple remapper using
asm-commonsthat applies the relocation and version upgrade at the same time.This PR also drops the
-allclassifier in favour of a single artifact which always embeds ASM to avoid class-path conflicts.Motivation
Faster loading of the embedded ASM classes at runtime.
Contributor Checklist
Jira ticket: [PROJ-IDENT]