update to 1.2.7

[feature] Allow users to individually refresh a specific layer (or multiple layers) in Lookin, thereby avoiding slow global refresh. This feature requires upgrading Lookin software to version 1.0.7 or higher.

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[feature] 允许用户在 Lookin 中单独刷新某一个图层（或某几个图层），从而避免缓慢的全局刷新。该 Feature 需要将 Lookin 软件升级至 1.0.7 或更高版本。