For those who wish to record your efforts, the Kaptain's Log is for you.
This mod will automatically record events as they happen. For many of them, an optional window can open to allow you to enter your own notes.
The new version for KSP 1.4.1 has new dependencies
Click Through Blocker
CKAN has been updated to install the dependencies, if needed.
Imgur albums don't seem to be working again, here is a link to it: