* add --exclude-from and --include-from options (flat file alternatives to --exclude/--include) ([06dd1c1](https://gitlab.com/to-be-continuous/tools/gitlab-cp/commit/06dd1c13445d678788daf30dae1c7f3d25057d93))
* add --include option (sync only some projects and subgroups) ([3266e81](https://gitlab.com/to-be-continuous/tools/gitlab-cp/commit/3266e8127bac2d809a0b856f80cec4b8fbde01fa))
* add --new-{group,project}-option(-from) options (JSON options for group/project creation) ([105fcee](https://gitlab.com/to-be-continuous/tools/gitlab-cp/commit/105fcee3b2feeff4f157a16e5133063d5bf4577c))
* handle $DRY_RUN and $HALT_ON_ERROR env vars ([23d38cb](https://gitlab.com/to-be-continuous/tools/gitlab-cp/commit/23d38cb5925fda8774ffd7585eae30aeefc616d5))
* improve boolean options from env vars (empty/"[secure]" is not true) ([2b0b789](https://gitlab.com/to-be-continuous/tools/gitlab-cp/commit/2b0b7891b4115d3b7fad77ead9012bdbba135e24))