Android < 7 support

[guillaume-d]

I only noticed now just before trying to install that the minimal required Android version is now 7 (compared to https://github.com/digitapex/DerDieDas's 4.0.3).

Given it was changed at the very start of the fork and it is a pretty large version gap, I have to ask: was this intentional?
Would you consider lowering it?

Please do not worry too much about testing:

• I am happy to regularly test on a (non-emulated) Android 4.1 device if this can be the minimal version
• I think owner of old devices are happy in general to have a version that might work on their particular device (it's always better than nothing), so it is more a matter of setting (low) expectatiions: minimal support, old devices' owners should submit MRs themselves to get their specific problems fixed for example

Security-wise supporting so old devices seems reasonable to me as the app itself requires no permissions.

[machiav3lli]

It's about the APIs, Java version and AndroidX. For the second there's already a solution. I'll try to push it down how far I can, but I don't think that it'd be under 5.0. Let's see

[opk12]

Just a heads up that Android >= 14 refuses to install apps with minimum target SDK < Android 6, per Google's docs. People are saying on the Internet that Android 15 will increase the target to Android 7 and will stop supporting the adb install --bypass-low-target-sdk-block workaround.