Change lapply to optionally take in an explicit env, make it optional for vapply so they match, then tweak Y such that it threads the dynamic env through, then implement eta-reduction in the compiler backend. This provides about the same speedup again from the Y elimination, as it's kinda the other half for fully getting rid of Y such that there's just static recursive calls. fib.kp went from 1.7 -> 1.1 -> 0.5, and fib_let similarly. fib.kp is now faster than fib_manual, but just by a bit.

.gitignore

@@ -32,3 +32,8 @@ kraken_bootstrap
 compiler_version.krak
 untracked_misc
 k_prime
+
+
+# Added by cargo
+
+/target