CyanogenMod is based on the Android Open Source Project with extra contributions from many people within the Android community. It can be used without any need to have any Google application installed. You will need to provide your own Google Applications package (gapps). CyanogenMod does still include various hardware-specific code, which is also slowly being open-sourced anyway.
All the source code for CyanogenMod is available in the CyanogenMod Github repo. And if you would like to contribute to CyanogenMod, please visit our Gerrit Code Review.
a) Video decoding & encoding
b) Ringtone doesn't ring sometimes
c) Tell me if you find some more bugs
FAQ : Post #2
Screenshots: Post #3
Changelogs: Post #4
NOTE: No bug reports will be entertained if proper logs are not provided along with the report. "X doesn't work" does not make sense without the logcat.
CyanogenMod 14 for Yuphoria, ROM for the YU Yuphoria
Source Code: http://github.com/CyanogenMod
ROM OS Version: 7.x Nougat
ROM Kernel: Linux 3.10.x
Based On: CyanogenMod
Last Updated 2016-09-06