vector_algorithms.cpp grew to about 6000 lines. That's about a half of <algoirthms> size. Out of separately compiled files it stands out, with only xcharconv_ryu_tables.cpp exceeding it.

The navigation became somewhat inconvenient, especially with a lot of unnamed namespaces, each containing its own functions set:

Do we want to do something about it?

We can:

• Do nothing
• Split vector_algorithms.cpp into multiple files
• Fuse all unnamed namespaces into one
• Do something diffrerent