[TYPO3-doc] Documentation of 4.5 branch

[wolo wolski]

Greetings.
Where is all documentation for Typo 4.5 now? Where are all of core references?
TCA ref for 4.5 cannot be found nowhere.
docs.typo3.org/typo3cms/TCAReference/ is only for most recent. Where is doc for 4.6? 4.7? 6.0, 6.1?
Typo 4.5 branch is still supported, but this whole Long Term Solution now looks like a big joke for me.
I'm working with T3 for 7 or 8 years now and never met such stupid problems like total lack of old documentation...
How can I check which TCA options are working in my version, which values are correct? How to set anything, when half of options are not working in this version...?