Fix compiler warnings in 1.7

lib/calendar/julian.ex

@@ -23,9 +23,7 @@ defmodule Timex.Calendar.Julian do
   def julian_date({year, month, day}),
     do: julian_date(year, month, day)
 
-  @doc """
-  Same as julian_date/1, except takes an Erlang datetime, and returns a more precise Julian date number
-  """
+  # Same as julian_date/1, except takes an Erlang datetime, and returns a more precise Julian date number
   @spec julian_date(Types.datetime) :: float
   def julian_date({{year, month, day}, {hour, minute, second}}) do
     julian_date(year, month, day, hour, minute, second)
@@ -78,7 +76,7 @@ defmodule Timex.Calendar.Julian do
       :mon -> mod(cardinal + 6, 7) + 1
     end
   end
-  def day_of_week(_, _, _, weekstart) when not weekstart in [:sun, :mon] do
+  def day_of_week(_, _, _, weekstart) when weekstart not in [:sun, :mon] do
     {:error, {:bad_weekstart_value, expected: [:sun, :mon], got: weekstart}}
   end
   def day_of_week(_,_,_, _) do

lib/comparable/diff.ex

@@ -59,7 +59,7 @@ defmodule Timex.Comparable.Diff do
   defp do_diff(a, b, :years) do
     diff_years(a, b)
   end
-  defp do_diff(_, _, granularity) when not granularity in @units,
+  defp do_diff(_, _, granularity) when granularity not in @units,
     do: {:error, {:invalid_granularity, granularity}}
 
   defp diff_years(a, b) do

lib/timex.ex

@@ -287,7 +287,7 @@ defmodule Timex do
 
       iex> use Timex
       ...> Timex.from_now(Timex.shift(DateTime.utc_now(), days: 2, hours: 1), "ru")
-      "через 2 дней"
+      "через 2 дня"
 
       iex> use Timex
       ...> Timex.from_now(Timex.shift(DateTime.utc_now(), days: -2), "ru")
@@ -306,9 +306,7 @@ defmodule Timex do
     end
   end
 
-  @doc """
-  Formats a DateTime using a fuzzy relative duration, with a reference datetime other than now
-  """
+  # Formats a DateTime using a fuzzy relative duration, with a reference datetime other than now
   @spec from_now(Types.valid_datetime, Types.valid_datetime) :: String.t | {:error, term}
   def from_now(datetime, reference_date),
     do: from_now(datetime, reference_date, Timex.Translator.default_locale)

lib/timezone/timezone.ex

@@ -325,11 +325,9 @@ defmodule Timex.Timezone do
     end
   end
 
-  @doc """
-  This version of resolve/3 takes a timezone name as a string, and an Erlang datetime tuple,
-  and attempts to resolve the date and time in that timezone. Unlike the previous clause of resolve/2,
-  this one will return either an error, a DateTime struct, or an AmbiguousDateTime struct.
-  """
+  # This version of resolve/3 takes a timezone name as a string, and an Erlang datetime tuple,
+  # and attempts to resolve the date and time in that timezone. Unlike the previous clause of resolve/2,
+  # this one will return either an error, a DateTime struct, or an AmbiguousDateTime struct.
   @spec resolve(Types.valid_timezone, Types.datetime, :utc | :wall) :: DateTime.t |
     AmbiguousDateTime.t | {:error, term}
   # These are shorthand for specific time zones