After10years request，Android15 support

[sundxr]

I use this Calculator apk more than ten years.
Since android6(I remind）cm change to aosp calculator，i always use old version。
this apk just give everything i need（not like fx991，its too heavy，but i also need sqrt and more）

everything changed till 64base application and 8gen1（i use xiaomi mix4 many years，it can works fine）
this month i bought a nubia z70u，so the calculator can‘t run on this device。
so sad ican't write android，i have to require u may rewrite this apk，give he then years life maybe more。

best wishes。