Release tags

[arni-magnusson]

Hi,

I've found these release tags helpful to reference, download, and compare versions:

  git tag  v0.9.0  df0b7c1
  git tag  v0.8.1  92aa728
  git tag  v0.8.0  1347c74
  git tag  v0.7.0  1dcf8b6
  git tag  v0.6.0  334a34b
  git tag  v0.5.5  d9a0c42
  git tag  v0.5.4  bf56f2b
  git tag  v0.5.3  02395eb
  git tag  v0.5.2  c8c940d
  git tag  v0.5.1  c460203
  git tag  v0.5.0  3c5f8dd
  git tag  v0.4.0  24081bd
  git tag  v0.3.0  186ec82
  git tag  v0.2.0  796f7c1
  git tag  v0.1.0  ea59306
  git tag  v0.0.9  5a1e1d3
  git tag  v0.05   367a8ae
  git tag  v0.04   0619022
# git tag  v0.03   16eea2a
  git tag  v0.02   cddb008
# git tag  v0.01   09f67ed

Perhaps they can be tagged in the main repository?