The server should keep some revisions and as such we put all revisions
together in a dir, and manage that per 'user'.
This deletes older revisions (keeping a max num of revisions per user)
and sets a symlink to the latest.
A rather simple server that allows POST uploads of small files that
have to be signed and owned by a bitcoin address.
The data embedded in this file is the backup of a (bitcoin cash) wallet.
Which should be made available by the wallet if it knows the address.
tomFlowee