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UPGRADE

Upgrading to a newer Sabre-Zarafa version follows the same path as the initial 
installation.

When upgrading to a new minor version e.g. from Sabre-Zarafa 0.15.1 to Sabre-Zarafa 0.15.2, 
the existing Sabre-Zarafa directory can be overwritten when extracting the archive.
When installing a new major version it is recommended to extract the tarball 
to another directory and to copy the state from the existing installation.

Please also observe the published release notes of the new Sabre-Zarafa version.
For some releases it is necessary to e.g. resynchronize the mobile.