[One (M7) Android Development] 9Lukas5:
For changelogs have a look at the Gerrit. I filtered it with this link for only merged and cm13.0 related commits yet:

device

kernel

Apart from the official changes, I use a fork of the cm kernel as I changed a few things there:

Enabled SWAP option - it's not set by default, it will only create a SWAP if you set it with a kernel config app. cm merged it now official

undervolted CPU - see here

Initial GPU Overclock - thanks @ pattyboi : ) cherry-picked from his repo

pushed GPU to 545Mhz

undervolted GPU and later this oh and did I tell you about this yet :p

tbaldens fastcharge (if I read the changed code correct, it only forces the device to charge in AC mode, even if USB is recognized) - thanks @ pattyboi : ) cherry-picked from his repo

Added User Voltage Control for CPU (and therefore removed the default undervolt)

Added smartmax CPU-Governor

Since 2016-10-02 build:

reverted: 163000 - msm: HTC: m7: Enable static 802.11 regulatory database

Since 2016-10-22 build:

166184 - UPSTREAM: netfilter: x_tables: validate e->target_offset early - MERGED

166185 - msm: perf: Do not allocate new hw_event if event is duplicate - MERGED

166186 - ASoC: msm: audio-effects: misc fixes in h/w accelerated effect - MERGED

166187 - perf: duplicate deletion of perf event - MERGED

166188 - net: Fix use after free in the recvmmsg exit path - MERGED

166189 - binder: prevent kptr leak by using %pK format specifier - MERGED

166190 - fs: ext4: disable support for fallocate FALLOC_FL_PUNCH_HOLE - MERGED

166191 - Replace %p with %pK to prevent leaking kernel address - MERGED

166192 - fix infoleak in rtnetlink - MERGED

Since 2016-09-03 build:

160241 - Torch: Add legacy check for camera hardware - MERGED

Since 2016-07-31 build:

Fix GPS - thanks for finding the working lib [MENTION=3573055]flab80[/MENTION] - fixed in cm's vendor-repo

Since 2016-07-17 build:

151062 - Revert "Revert "m7-common: fix broken rotation"" - MERGED

Since 2016-06-14 build:

148941 - m7-common: Remove HTC sound config - MERGED

148942 - m7-common: Clean up Android.mk - MERGED

148943 - m7-common: Remove deprecated vold flags - MERGED

148944 - m7-common: Organize boardconfig - MERGED

148945 - m7-common: Remove extra AAPT_CONFIG - MERGED

148946 - m7-common: Organize m7-common.mk - MERGED

140146 - PackageInstaller: Themes: Add Tint mode for custom icon - MERGED

149372 - frameworks_base: SysUI: Don't let rogue themes ruin notifications - MERGED

Since 2016-04-10 build:

135528 - frameworks_base: bootanimation: Reduce thread priority - cm did a great job with the new Android is updating screen

139192 - SettingsProvider : load region-specific settings - MERGED

138263 - Settings: Rework vibration intensity slider - MERGED

138571 - Settings: Save vibration intensity on close - MERGED

140103 - Global actions: fix airplane mode switch for MSIM - MERGED

139976 - SysUI: Deprecate collapseNotificationPanel [2/2] - MERGED

139975 - LLS: Deprecate collapseNotificationPanel [1/2] - MERGED

140184 - porting jpeg_mem_src() from jpeg lib v8c - MERGED

139886 - init: Increase coldboot timeout to 5 seconds - MERGED

131628 - frameworks_base: Barrier only messages shouldn't prevent the idle handlers from running - cm did a great job with the new Android is updating screen

131627 - frameworks_base: policy: Show a simple dialog about optimizing apps - cm did a great job with the new Android is updating screen

129343 - m7-common: Switch to Clang by default - MERGED

129345 - m7-common: use Snap camera app - MERGED

125274 - m7-common: Shim libhtc_symbols instead - MERGED