exclude:
  - release-scripts
  - LICENSE
  - Makefile
  - README.md
  - RELEASING.md
  - DEVELOPER_GUIDE.md
  - CONTRIBUTING_DOCS.md
  - CONTRIBUTING_CODE.md
  - DOC_STYLE_GUIDE.md
  - hack
  - calico_node
  - v1.5
  - v1.6
  - v2.0
  - v2.1
  - v2.2
  - v2.3
  - v2.4
  - v2.5
  - v2.6
  - v3.0
  - v3.1
  - v3.2
  - v3.3
  - v3.4
  - v3.5
  - v3.6
  - v3.7
  - v3.8

exclude:
  - release-scripts
  - LICENSE
  - Makefile
  - README.md
  - RELEASING.md
  - DEVELOPER_GUIDE.md
  - CONTRIBUTING_DOCS.md
  - CONTRIBUTING_CODE.md
  - DOC_STYLE_GUIDE.md
  - hack
  - calico_node
  - v1.5
  - v1.6
  - v2.0
  - v2.1
  - v2.2
  - v2.3
  - v2.4
  - v2.5
  - v2.6
  - v3.0
  - v3.1
  - v3.2
  - v3.3
  - v3.4
  - v3.5
  - v3.6
  - v3.7
  - v3.8
  - v3.9

Exclude 3.9 release from config_dev, since its already released.
Exclude 3.9 release from config_dev, since its already released.

This fixes #2938  for me.  I don't know if it breaks other people though.  if this causes problems, should we have a  `make-master` directive of some sort... or maybe update the makefile?