Added the following entries to hash-syntax:

> Chicken has #ci and #cs for case-insensitive and case-sensitive.

And the following to hash-bang-syntax:

> Larceny has these:
>
>     #!r7rs         ; implies #!no-fold-case, enables R7RS syntax
>     #!r6rs         ; implies #!no-fold-case, negates other flags
>     #!r5rs         ; implies #!fold-case, enables R7RS syntax
>     #!err5rs       ; enables R7RS/R6RS syntax with extensions
>     #!larceny      ; implies #!no-fold-case and #!err5rs

All from John. It was tricky to transcribe these in a format matching
the rest of the tables so I may have messed something up; if so, please
correct.

https://registry.scheme.org/#hash-syntax
https://registry.scheme.org/#hash-bang-syntax