Please add extensible-compound-types

[digikar99]

Please fetch from the master branch at https://github.com/digikar99/extensible-compound-types

The system provides a shadowing-cl package that allows the definition of user-defined compound-types. Built-in compound types provided by ANSI CL include (VECTOR &OPTIONAL ELEMENT-TYPE LENGTH) or (INTEGER &OPTIONAL LOWER-LIMIT UPPER-LIMIT). With this system, can define types such as (EQUALP OBJECT) type, or (TYPE= TYPE), or (PAIR TYPE-1 TYPE-2) type, or (CUSTOM-ARRAY ELEMENT-TYPE DIMENSIONS).

[quicklisp]

Failure log here: http://report.quicklisp.org/2022-06-09/failure-report/extensible-compound-types.html

[digikar99]

I made the fix and tested it locally. Could you please recheck?

[digikar99]

Please avoid adding extensible-compound-types. I'm abandoning it in favour of peltadot.