This helps slightly with performance, allows better monitoring via realm
studio, but most importantly greatly reduces filesize.
fully compacted: 109M
transaction size 100: 115M
transaction size 1000: 123M
transaction size 10000: 164M
single transaction: 183M
With a transaction size of 100 there is a performance reduction, so 1000
seems to be the best middle-ground.
This really shouldn't have much effect as it will be run in the first
`Update` method and is probably a noop (we are already pointing to the
newest version due to just performing writes), but seems like a safe addition.
In general `Realm.Refresh()` only really does anything when there's multithreaded
usage and notifications to be sent.