Reworking Git Branches with git filter-branch

A walkthrough of using `git filter-branch` to solve a complex documentation backport problem in the Debezium project. The situation involved divergent branch structures (monolithic vs. modularized AsciiDoc files) with hundreds of commits making cherry-picking impractical. The solution used `--subdirectory-filter` to isolate documentation-only commits from master, `--tree-filter` to restore the original directory layout, interactive rebase to clean up the first commit, and `git rebase --onto` to transplant the filtered commits onto the target branch. A final interactive rebase discarded commits irrelevant to the 1.0 release.