Swimchain Android v0.1.6-alpha (mainnet — fixed)

Fixes the app not connecting to peers. The bundled node was hardcoded to testnet (NetworkMode::Testnet) despite the previous release being labeled mainnet, so it dialed testnet seeds and never joined the mainnet network. This build joins mainnet (seed 167.71.241.252:9735) and uses a network-specific data dir so no manual clear-data is needed. arm64-v8a. (PR #91)