Improvements:

* [#3966] Added config options to tweak the hight of oil spouts (sca)
* [#4256] Added a config option to change oil's flamibility (sca)

Bug fixes:

* [#3837] Oil spouts spawn in superflat (sca)
* [#4263] The guide book contents page doesn't display the full item tooltips.
* [#4268] Partial fix for crash when loading with headcrumbs.