This commit fixes a few copyright headers that have been missed in the
automatic update on Jan 1, as well as the generation code in the compat
workspace so it generates the right headers.
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An extraction script that makes the LF reading libraries (DAML LF archive decoding to an AST) usable in other Haskell projects.
This script once existed but is not available any more, so I have resurrected the script, adapted to current usage, and upgraded to the newest stackage LTS that can support it. These libraries _could_ be versioned manually to released SDKs and published if desirable (without making any guarantees about the stability, therefore prefixing the version with `0.`.
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Tool to extract Haskell libraries for DAML LF archives for use in other Haskell projects
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