chore: release 2.1.0

Signed-off-by: Ryan Wang <[email protected]>

docs: update readme (halo-dev#18)

release: 1.5.0-alpha.2

Signed-off-by: Ryan Wang <[email protected]>

release: 1.5.0-alpha.1

Signed-off-by: Ryan Wang <[email protected]>

Update theme.yaml

doc: update readme

Update comment.ftl