Update rel docs, spack package

doc/contrib/release.rst

@@ -140,7 +140,7 @@ Post Release
  - Make sure that `Notebooks <https://www.v2.opensourcebrain.org/repositories/38>`_ work on the version that their image is built with.
 
 #. Announce on our website
-#. Announce on HBP newsletter [email protected], HBP Twitter/socials [email protected]
+#. Announce on HBP newsletter [email protected], [email protected], HBP Twitter/socials [email protected]
 #. [AUTOMATED] Add tagged version of docs on ReadTheDocs
 #. HBP internal admin
 
@@ -154,8 +154,6 @@ Post Release
 
  - ContentTypes: https://humanbrainproject.github.io/openMINDS/v3/core/v4/data/contentType.html
  - details: https://github.com/HumanBrainProject/openMINDS_core/tree/v3/instances/data/contentTypes
-
- - Send an update to the folk in charge of HBP Twitter if we want to shout about it
 
 #. FZJ admin
 

spack/package.py

@@ -13,7 +13,7 @@ class Arbor(CMakePackage, CudaPackage):
  homepage = "https://arbor-sim.org"
  git = "https://github.com/arbor-sim/arbor.git"
  url = "https://github.com/arbor-sim/arbor/releases/download/v0.8.1/arbor-v0.9.0-full.tar.gz"
- maintainers = ["thorstenhater", "brenthuisman", "haampie"]
+ maintainers = ("thorstenhater", "brenthuisman", "haampie")
 
  version("master", branch="master")
  version("develop")