Update float_regression.cljc

Use float constants, no exec or boolean instructions, and epsilon lexicase selection

src/propeller/problems/float_regression.cljc

@@ -23,12 +23,8 @@
         :float_subtract
         :float_mult
         :float_quot
-        :float_eq
-        :exec_dup
-        :exec_if
-        'close
-        0
-        1))
+        0.0
+        1.0))
 
 (defn error-function
   "Finds the behaviors and errors of an individual. The error is the absolute
@@ -72,7 +68,7 @@
        :population-size          1000
        :max-initial-plushy-size  100
        :step-limit               200
-       :parent-selection         :lexicase
+       :parent-selection         :epsilon-lexicase
        :tournament-size          5
        :umad-rate                0.1
        :solution-error-threshold  0.5