Why does Google Camera need Marshmallow or Nougat for the newest releases?

[smileyhead]

This is bugging me so much. Why does a fucking camera app need these versions?

Backstory:
I have a phone with Lollipop (5.1.1 to be exact), but the latest Camera version compatible with Lollipop is 2.7 (4.4+). The next release, 3.1 needs Marshmallow (6.0+), and the latest one, 4.1 needs Nougat (7.0+).
Now, why is this bugging me, you might be asking. Here's why: The first Lollipop-incompatible version, 3.1 introduced a new UI, and I fucking love it, but I can't get it, because my phone doesn't have a Marshmallow or a Nougat ROM for it.

 

[smileyhead]

*coughing intensifies*

 

[smileyhead]

Beep.

 

[Empu1]

Wow, so lonely here o.o

Well, Android applications require a certain API (Application Programming Interface) level to work properly and uh, the newest Google Camera updates are targeting a higher level than that of Android Lollipop (Which has levels 21 and 22, whereas MM is 23 and Nougat is 24). A quick look through XDA shows that someone ported Google Camera 3.0 to Android 5.0+ devices. Look for "[APP][PORT][5.0+] New Google Camera v3.0!". Just a quick note though, you'll need to be rooted and have xposed installed.

 

[smileyhead]

Thanks!

 

[smileyhead]

I can't install it.

Updating partition details...
...done
Full SELinux support is present.
MTP Enabled
Installing zip file '/external_sd/FLASH/Google_Camera_v3.0_port_by_androidexpert35.zip'
Checking for MD5 file...
Skipping MD5 chack: no MD5 file found
Updater process ended with ERROR: 255
Error installing zip file '/external_sd/FLASH/Google_Camera_v3.0_port_by_androidexpert35.zip'
Updating partition details...
...done