Add slices_intersect() function

Author: jturner314

Cargo.toml

@@ -27,6 +27,7 @@ bench = false
 test = true
 
 [dependencies]
+num-integer = "0.1.39"
 num-traits = "0.2"
 num-complex = "0.2"
 itertools = { version = "0.7.0", default-features = false }