This commit adjusts the merging script to include a SPDX license
identifier at the start of the single header file. This can help users
of Crow which have environments using license scanning tools to help
manage/monitor used implementation.
Signed-off-by: James Knight <james.d.knight@live.com>
modified merge script to include middlewares, all are included by default
include excludes everything else (items separated by ',')
exclude only excludes selected items (items separated by ',')