feature suggestion: asset page about releases and cumulative updates

[nbehrnd]

In addition to the possibility to download the installers of DW for Windows/Mac/Linux on openmolecules.org, I propose to equally use the release page -- currently empty -- to provide them. The pattern could be similar like the one e.g., by Avogadro

Some users report their local policy on site disallows to use DW's optional automatic fetch of incremental updates. By their md5sum checksum, datawarrior_v06.02.05.jar collected by DW 06.02.03 and stored in /opt/datawarrior/updates (Linux) is the same the one collected by DW 06.02.01 which suggests the updates are cumulative in reference of the major release DW 6.1.0 and its installers on the openmolecules page. I suggest DW's release page on GitHub equally announces them, and provides the latest as a .zip archive, for instance with the one attached below.

To bypass GitHub's limit of 25MB of attachments, I created a split zip

$ zip -r -s 20m datawarrior_v06.02.05.jar.zip ./datawarrior_v06.02.05.jar 
  adding: datawarrior_v06.02.05.jar (deflated 5%)
norwid@debian:/opt/datawarrior/update$ ls
datawarrior_v06.02.05.jar      datawarrior_v06.02.05.jar.z02
datawarrior_v06.02.05.jar.z01  datawarrior_v06.02.05.jar.zip

and subsequently added a .txt to components z01 and z02 to provide a file extension acceptable to GitHub. Hence remove these temporary additions, and unzip datawarrior_v06.02.05.jar.zip.

datawarrior_v06.02.05.jar.zip
datawarrior_v06.02.05.jar.z01.txt
datawarrior_v06.02.05.jar.z02.txt