Using library and removed common functions (#3)

* Added lib from git and removed code which is in lib now

* NormalizePathLayer to remove trailing slash

src/expressions/truth_table.rs

@@ -1,12 +1,12 @@
 use std::cmp::Ordering;
 use std::collections::HashMap;
 
+use lib::map;
+use lib::vector::distinct::Distinct;
 use serde::{Deserialize, Serialize};
 
 use crate::expressions::expression::Expression;
-use crate::map;
 use crate::routing::options::TruthTableOptions;
-use crate::utils::array::Distinct;
 
 type TruthMatrix = Vec<Vec<bool>>;
 
@@ -197,8 +197,9 @@ impl TruthTable {
 
 #[cfg(test)]
 mod tests {
+    use lib::matrix;
+
     use crate::expressions::helpers::{and, atomic, implies, not, or};
-    use crate::matrix;
 
     use super::*;