Different Neptun versions for different Schools

[PoLaKoSz]

There is a big chance that not every Neptun owner school will get/install the latest version of the official
Neptun to their servers so it will cause some problems here.

Ideas

Support only (the latest) one build

- Not flexible (should monitor the release cycle of the official app because maybe this is good enought™)
- There is a big chance that we can not support every School when a new release came up (which is a huge problem)

+ Easiest way to maintain the app
+ No need NuGet package for each School

Support only the latest two builds

- Can cause ugly codebase
For eg.:

class ...Deserializer
{
    public int ..Count(string sourceCode)
    {
        if (OfficialApp.BuildNumber == 455)
        {
            RunLatestDeserializer(sourceCode);
        }
        else if (OfficialApp.BuildNumber == 454)
        {
            RunSecondLatestDeserializer(sourCode);
        }
    }
}

- There is a small chance that we can not support every School when a new release came up (which is a huge problem)

+ Bit flexible
+ No need NuGet package for each School

Support every build

- Lot of Google Play / AppStore / Microsoft Store updates (caused by the lot of School NuGet dependency)
- More complex App

                            School NuGet        NeptunPro NuGet
                         ←    ELTE        ←   Neptun Build 455
    Container App        ←    OE          ←   Neptun Build 454
                         ←    ...

- Dependency Hell?
- Maybe this is not even possible (or maybe yes?)

+ Cleanest solution for the problem