v1.4.0
Docs: Add the plugin tutorials from #4356 (#4854)
reset body margin to avoid scrollbars (#5823)
Optimised images. Saved 1.1 MB out of 9.7 MB. 22.3% per file on average (up to 62%) (#5936)
Update extending-1-classes.md
placekitten
minor typos (#6398)
