[Oberon] Git usage for A2.

[peter at easthope.ca]

Hi,

According to https://gitlab.inf.ethz.ch/felixf/oberon I've created a 
local copy of the git repository.

For the executable, I must choose between two options.  Install 
git-lfs or retrieve a needed zip file directly.  Appears git-lfs is 
the more comprehensive way.  Is there a reason not to work with 
git-lfs? Any tips about configuration and use?

Thx,                           ... P.

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