Put or remove without triggering data observers

Is it possible to add an option of put (maybe remove as well) that will not trigger data observers? This can be useful when you are doing some maintenance work on entity (i.e. updating timestamp) and do not wish observer be triggered. As a workaround, we can unregister the observer, do the work and then register again, however that is quite messy.

I can imagine it being:

1. box.putSilently(entity)
2. box.removeSilently(entity)
3. boxStore.runInTxSilently(runnable)

首先检查 issue 中引用的 put、remove、data observer 和 runInTx API。确定 silent variant 是否应涵盖实体更新、移除和事务，并围绕一种有文档说明的行为定义完成标准：执行所请求的维护工作，同时不触发 observer。