Params: add recursion depth param

params.toml

@@ -64,16 +64,17 @@
         get_instant = 0.0
 
     [types.gen_integer]
-        expr_add = 0.0
-        expr_sub = 0.0
-        expr_mul = 0.0
-        expr_div = 0.0
+        expr_add = 0.2
+        expr_sub = 0.2
+        expr_mul = 0.1
+        expr_div = 0.1
         expr_rem = 0.0
         expr_exp = 0.0
         expr_pos = 0.0
         expr_neg = 0.0
 
-        get_instant = 0.0
+        get_instant = 0.4
+        max_depth = 20
 
     [types.gen_real]
         expr_add = 0.0

src/params.rs

@@ -132,6 +132,7 @@ toml_struct!{
         expr_pos: f64,
         expr_neg: f64,
         get_instant: f64,
+        max_depth: u32,
     }
 }