Change int64 parsing behaviour to internally do a ParseFloat first in…

…stead

koanf.go

@@ -668,12 +668,12 @@ func toInt64(v interface{}) (int64, error) {
 	}
 
 	// Force it to a string and try to convert.
-	i, err := strconv.Atoi(fmt.Sprintf("%v", v))
+	f, err := strconv.ParseFloat(fmt.Sprintf("%v", v), 64)
 	if err != nil {
 		return 0, err
 	}
 
-	return int64(i), nil
+	return int64(f), nil
 }
 
 // toInt64 takes an interface v interface{}value and if it is a float type,

koanf_test.go

@@ -608,7 +608,7 @@ func TestGetTypes(t *testing.T) {
 		assert.Equal(t, map[string]int64{"key1": 1, "key2": 1, "key3": 1}, c.koanf.Int64Map("parent1.intmap"), "get value mismatch")
 		assert.Equal(t, map[string]int64{}, c.koanf.Int64Map("parent1.boolmap"), "get value mismatch")
 		assert.Equal(t, map[string]int64{}, c.koanf.Int64Map("xxxx"), "get value mismatch")
-		assert.Equal(t, map[string]int64{}, c.koanf.Int64Map("parent1.floatmap"), "get value mismatch")
+		assert.Equal(t, map[string]int64{"key1": 1, "key2": 1, "key3": 1}, c.koanf.Int64Map("parent1.floatmap"), "get value mismatch")
 		assert.Equal(t, []int{1, 2, 3}, c.koanf.Ints("parent1.child1.grandchild1.ids"), "get value mismatch")
 		assert.Equal(t, []int{}, c.koanf.Ints("xxxx"), "get value mismatch")
 		assert.Equal(t, map[string]int{"key1": 1, "key2": 1, "key3": 1}, c.koanf.IntMap("parent1.intmap"), "get value mismatch")