Option to ignore beta releases

[arteeh]

I'm on version 0.3.5 and every time I start MQTT Explorer it tells me that there are updates available. When I click it, it tells me to install 0.4.0-beta4. That's a little weird, because i see there is already a newer beta. It even shows the changelog for both beta 4 and 6.

My request is for there to be an option to ignore beta releases and only get an update notification when there is a stable release.