add a note to the README about this being a tutorial for an ancient version of Rust
-rw-r--r-- 24 .gitignore
-rw-r--r-- 152 Cargo.lock
-rw-r--r-- 117 Cargo.toml
-rw-r--r-- 20133 LICENSE-CC
-rw-r--r-- 1599 Makefile
-rw-r--r-- 1254 README.md
-rw-r--r-- 111 TODO.txt
drwxr-xr-x - docs
-rw-r--r-- 263 dup-unimpl.sed
-rwxr-xr-x 2210 pycco-rs
drwxr-xr-x - solutions
drwxr-xr-x - src
drwxr-xr-x - workspace