Stay below 80 characters in width in the README as well

README

@@ -99,13 +99,13 @@ func New(de, ci time.Duration) *Cache
     before their next lookup or before calling DeleteExpired.
 
 func (c *Cache) Set(k string, x interface{}, d time.Duration)
-    Adds an item to the cache, replacing any existing item. If the duration is 0,
-    the cache's default expiration time is used. If it is -1, the item never
+    Adds an item to the cache, replacing any existing item. If the duration is
+    0, the cache's default expiration time is used. If it is -1, the item never
     expires.
 
 func (c *Cache) Add(k string, x interface{}, d time.Duration) error
-    Adds an item to the cache only if an item doesn't already exist for the given
-    key, or if the existing item has expired. Returns an error if not.
+    Adds an item to the cache only if an item doesn't already exist for the
+    given key, or if the existing item has expired. Returns an error if not.
 
 func (c *Cache) Replace(k string, x interface{}, d time.Duration) error
     Sets a new value for the cache item only if it already exists. Returns an
@@ -118,22 +118,22 @@ func (c *Cache) Get(k string) (interface{}, bool)
 func (c *Cache) Increment(k string, n int64) error
     Increment an item of type int, int8, int16, int32, int64, uintptr, uint,
     uint8, uint32, or uint64, float32 or float64 by n. Returns an error if the
-    item's value is not an integer, if it was not found, or if it is not possible
-    to increment it by n. Passing a negative number will cause the item to be
-    decremented.
+    item's value is not an integer, if it was not found, or if it is not
+    possible to increment it by n. Passing a negative number will cause the item
+    to be decremented.
 
 func (c *Cache) IncrementFloat(k string, n float64) error
     Increment an item of type int, int8, int16, int32, int64, uintptr, uint,
     uint8, uint32, or uint64, float32 or float64 by n. Returns an error if the
-    item's value is not an integer, if it was not found, or if it is not possible
-    to increment it by n. Passing a negative number will cause the item to be
-    decremented.
+    item's value is not an integer, if it was not found, or if it is not
+    possible to increment it by n. Passing a negative number will cause the item
+    to be decremented.
 
 func (c *Cache) Decrement(k string, n int64) error
     Decrement an item of type int, int8, int16, int32, int64, uintptr, uint,
     uint8, uint32, or uint64, float32 or float64 by n. Returns an error if the
-    item's value is not an integer, if it was not found, or if it is not possible
-    to decrement it by n.
+    item's value is not an integer, if it was not found, or if it is not
+    possible to decrement it by n.
 
 func (c *Cache) Delete(k string)
     Deletes an item from the cache. Does nothing if the item does not exist in
@@ -155,9 +155,9 @@ func (c *Cache) SaveFile(fname string) error
     doesn't exist, and overwriting it if it does.
 
 func (c *Cache) Load(r io.Reader) error
-    Adds (Gob-serialized) cache items from an io.Reader, excluding any items that
-    already exist in the current cache.
+    Adds (Gob-serialized) cache items from an io.Reader, excluding any items
+    that already exist in the current cache.
 
 func (c *Cache) LoadFile(fname string) error
-    Loads and adds cache items from the given filename, excluding any items that
-    already exist in the current cache.
+    Loads and adds cache items from the given filename, excluding any items
+    that already exist in the current cache.