Do not write ChangeLog files for NPTH. We put change information only in the GIT commit log, and generate a top-level ChangeLog file from logs at “make dist” time. As such, there are strict requirements on the form of the commit log messages.
Your commit log should always start with a one-line summary, the second line should be blank, and the remaining lines are usually ChangeLog-style entries for all affected files. However, it’s fine – even recommended – to write a few lines of prose describing the change, when the summary and ChangeLog entries don’t give enough of the big picture. Omit the leading TABs that you’re used to seeing in a “real” ChangeLog file, but keep the maximum line length at 72 or smaller, so that the generated ChangeLog lines, each with its leading TAB, will not exceed 80 columns.