Make sure Integer can be treated as Float (#7909)

distribution/lib/Standard/Base/0.0.0-dev/src/Data/Numbers.enso

@@ -1171,6 +1171,8 @@ type Number_Parse_Error
     to_display_text self =
         "Could not parse " + self.text.to_text + " as a double."
 
+Float.from (that:Integer) = (1.0 * that):Float
+
 ## A wrapper type that ensures that a function may only take positive integers.
 type Positive_Integer
     ## PRIVATE

test/Tests/src/Data/Numbers_Spec.enso

@@ -18,6 +18,15 @@ Integer.is_even self = self % 2 == 0
 
 Float.get_fun_factor self = "Wow, " + self.to_text + " is such a fun number!"
 
+type Complex
+    Value re:Float im:Float
+
+    new re=0 im=0 = Complex.Value re im
+
+    + self (that:Complex) = Complex.new self.re+that.re self.im+that.im
+
+Complex.from (that:Number) = Complex.new that
+
 spec =
     eps = 0.000001
     almost_max_long = 9223372036854775806
@@ -536,6 +545,12 @@ spec =
             3.truncate . should_equal 3
             -3.truncate . should_equal -3
 
+    Test.group "Number Conversions" <|
+        Test.specify "Returns its argument" <|
+            v1 = (Complex.new 1 2) + (Complex.new 3)
+            v2 = (Complex.new 1 2) + 3
+            v1 . should_equal v2
+
     Test.group "BigInts" <|
         expected_value = 2002115494039257055317447151023464523838443110452722331466645440244415760562579268801894716412