As there has been requests to add some currencies that are pegged to the US Dollar, I made a new version (0.8-5). In this version there is a Pegged to the US Dollar toggle button in Currency Edit. With this feature the exchange rates are calculated automatically during update for custom currencies that are pegged to the US Dollar.

Unfortunately the autobuilder in maemo.org seems to be broken now, so I'm not able to upload it to Extars-devel. I will do it as soon as it works again. I will notify when it is successfully uploaded.