Changed args for lume.any/all(), fixed README.md

* The functions lume.any() and lume.all() now have a default function if
  one is not provided -- their default behaviour with a single argument
  now matches that of Python.
* Updated README.md to reflect changes
* Fixed typo in lume.any()'s example in README.md
* Incremented version revision number

README.md

@@ -66,18 +66,20 @@ with the resulting values.
 lume.map({1, 2, 3}, function(x) return x * 2 end) -- Returns {2, 4, 6}
 ```
 
-### lume.all(t, fn)
+### lume.all(t [, fn])
-Calls `fn` on each value in `t` table and returns true if all the calls to `fn`
+Returns true if all the values in `t` table are true. If a `fn` function is
-return true.
+supplied it is called on each value, true is returned if all of the calls to
+`fn` return true.
 ```lua
 lume.all({1, 2, 1}, function(x) return x == 1 end) -- Returns false
 ```
 
-### lume.any(t, fn)
+### lume.any(t [, fn])
-Calls `fn` on each value in `t` table and returns true if any of the
+Returns true if any of the values in `t` table are true. If a `fn` function is
-calls to `fn` return true.
+supplied it is called on each value, true is returned if any of the calls to
+`fn` return true.
 ```lua
-lume.all({1, 2, 1}, function(x) return x == 1 end) -- Returns true
+lume.any({1, 2, 1}, function(x) return x == 1 end) -- Returns true
 ```
 
 ### lume.reduce(t, fn, first)

lume.lua

@@ -7,7 +7,7 @@
 -- under the terms of the MIT license. See LICENSE for details.
 --
 
-local lume = { _version = "1.0.3" }
+local lume = { _version = "1.0.4" }
 
 
 function lume.clamp(x, min, max)
@@ -87,6 +87,7 @@ end
 
 
 function lume.all(t, fn)
+  fn = fn or function(x) return x end
   for k, v in pairs(t) do
     if not fn(v) then return false end
   end
@@ -95,6 +96,7 @@ end
 
 
 function lume.any(t, fn)
+  fn = fn or function(x) return x end
   for k, v in pairs(t) do
     if fn(v) then return true end
   end