Support parsing float literals in Bergamot

Signed-off-by: Danila Fedorin <danila.fedorin@gmail.com>

src/Bergamot/Parser.elm

@@ -10,9 +10,6 @@ import Set exposing (Set)
 reserved : Set String
 reserved = Set.fromList ["section"]
 
-intLit : Parser Int
-intLit = Parser.int
-
 strLit : Parser String
 strLit =
     let
@@ -78,7 +75,13 @@ term = Parser.lazy (\() -> Parser.oneOf
         |= name
     , Parser.backtrackable <|
       Parser.succeed Var |= variable
-    , Parser.succeed IntLit |= intLit
+    , Parser.number
+        { int = Just IntLit
+        , hex = Nothing
+        , octal = Nothing
+        , binary = Nothing
+        , float = Just FloatLit
+        }
     , Parser.succeed StringLit |= strLit
     ])