Set Future.get timeout=20s in Sedis.keys()
update version to 1.4.2
fix method name to getSedis
update version to 1.4.3
Support MSET and MGET

  public Map<String, String> mget(String... keys)
  public Map<byte[], byte[]> mget(final byte[]... keys)
  public Map<String, String> mset(String... keysvalues)
  public Map<byte[], String> mset(final byte[]... keysvalues)
update version to 1.5.0