all: update CI and x/sys to latest versions

v3: changes to get this module ready for release

Fix comments

full compatibility using the old interfaces

add legacy compat wrapper for Handlers

add go.mod, fmt, and update paths

Fix match test

Do not alloc/copy around key names

Fix tests

Fix ext package

Push Record on the stack

Report allocations

Addition benchmarking

Remove caller func completely

root: switch to use golang.org/x/term