v0.3.1

We update the strategy to determine the home path of TSDB.

What's Changed

• Update logo URLs by @WenjieDu in #54
• Apply a new strategy to determine the home path by @WenjieDu in #55
• Add migrate_cache() and remove deprecated funcs by @WenjieDu in #56

Full Changelog: v0.3...v0.3.1