Increase the amount of releases scanned for a suitable release type

[Pewtro]

Ran into an issue where https://github.com/Nevcairiel/ShadowedUnitFrames is saying "no proper version for your flavour" but it definitely exists and has worked in the past up until latest release for retail.

The issue is that there are now 5 retail releases in a row until you reach the classic version.

My hope is that either the default is increased or it becomes an option to change the default value of github releases searched :)