Fixup timezone parsing last kday bug

Author: dbernheisel

README.md

@@ -127,7 +127,7 @@ iex> DateTimeParser.parse_time("10:13:34")
 {:ok, ~T[10:13:34]}
 
 iex> DateTimeParser.parse_time("18:14:21.2.0851000000Z")
-{:ok, ~T[18:14:21.2.0851]}
+{:ok, ~T[18:14:21.2]}
 
 iex> DateTimeParser.parse_datetime(nil)
 {:error, "Could not parse nil"}

lib/date_time_parser/timezone_parser.ex

@@ -294,7 +294,8 @@ defmodule DateTimeParser.TimezoneParser do
 
   defp handle_kday(year, month, "last" <> day) do
     year
-    |> Date.new!(month + 1, 1)
+    |> Date.new!(month, 1)
+    |> Date.end_of_month()
     |> Kday.last_kday(day_of_week(day))
   end