Simply outstanding work! This is the fourth GermainZ Xposed module that has earned a permanent place on my phone (out of only 11 total that have earned such distinction).
SUGGESTION: Revise the OP to state something like:
“This will not prevent notifications from being cleared by the application when you click on them. It simply prevents them from being cleared when you click 'clear all'."
WHY DO I SUGGEST THAT:
The average non-sophisticated user (like me), relates the word “pinned” to things like pinning an app to status bar in windows or pinning a post to the top of a forum....or even in the old days pinning a paper note on a corkboard. In all those cases, it stays pinned there until you deliberately unpin it. You have explained several times in the thread already why that’s not the case for notifications, but I’ll bet you’ll be answering that same question again and again if you don’t put it in the op. I read where you said "to prevent accidentally clearing", but that didn't tell the whole story for a simple minded person like me who expected it to remain pinned until deliberately unpinned.
Thanks again for all your great modules.
AT&T GS4 SGH-i337 with MK2, rooted