I, Duc Nguyen, retroactively sign off on these commits:

commit 244288f Add XMSS parameter xmss_sha256_h10 (#1482)
commit a7e26d9 Add 12 XMSS and 16 XMSSMT parameters. (#1489)
commit 4694fc3 Add secret key object to XMSS (#1530)
commit 99067be Add XMSS Serialize/Deserialize  (#1542)
commit 2dbfc40 Update XMSS secret key object APIs, sync with LMS  (#1588)
commit 47740ad Enforce idx from unsigned int to uint32_t. (#1611)
commit 9610576 Fix windows-x86 and arm compiling error. (#1634)
commit bb658b7 Address  stateful-sigs comments in #1650 (#1656)
commit 7db8ddf Update `sig_stfl.h` document for #1650 (#1655)
commit c3e5750 Add Apache 2.0 and MIT License to XMSS (#1662)
commit e1f02b2 Change XMSS License from `(Apache 2.0 AND MIT)` to `(Apache 2.0 OR MIT) AND CC0-1.0` (#1697)
commit 17c12c3 Add return status for XMSS lock/unlock functions. (#1712)
commit 1941636 Add return check for lock/unlock function (#1727)
commit b45415c Use `abort()` instead of exit to get the trace log. (#1728)
commit ba63672 Reduce number of `malloc/free` call in `XMSS/external` (#1724)

Signed-off-by: Duc Tri Nguyen <[email protected]>