add Set,List,Hash

[znddzxx112]

Hash

• (table *CacheTable) HAdd(key interface{}, lifeSpan time.Duration, hkey interface{}, hvalue interface{}) *CacheItem
• (table *CacheTable) HValue(key interface{}, hkey interface{}) (interface{}, error)
• (table *CacheTable) HDelete(key interface{}, hkey interface{}) error

List

• (table *CacheTable) LPush(key interface{}, lifeSpan time.Duration, value interface{}) error
• (table *CacheTable) LPop(key interface{}) (interface{}, error)
• (table *CacheTable) RPush(key interface{}, lifeSpan time.Duration, value interface{}) error
• (table *CacheTable) RPop(key interface{}) (interface{}, error)
• (table *CacheTable) ListLength(key interface{}) (int, error)

Set

• (table *CacheTable) SAdd(key interface{}, lifeSpan time.Duration, member interface{}) *CacheItem
• (table *CacheTable) SIsMember(key interface{}, member interface{}) bool
• (table *CacheTable) SDelete(key interface{}, member interface{}) error

[coveralls]

Coverage decreased (-6.1%) to 93.869% when pulling ac19fc8 on znddzxx112:cacheitemSet into 493cbf5 on muesli:master.

[muesli]

I like your work, but is this necessary as part of cache2go, though? I wonder if that's not out-of-scope for a small caching library like this. Couldn't you just use your set/list/hash and add them as a member to a cache table?