bug: duplicate lang item in crate sp_io (which sp_application_crypto depends on): panic_impl.

[chungquantin]

There are a few different issues with the pop-drink crate. Try to add it to a blank example contract and got the below error:

 Compiling pop-primitives v0.0.0 (/Users/chungquantin/Developer/pop-network/pop-node/primitives)
  error[E0152]: duplicate lang item in crate `sp_io` (which `sp_application_crypto` depends on): `panic_impl`
    |
    = note: the lang item is first defined in crate `sp_io` (which `sp_application_crypto` depends on)
    = note: first definition in `sp_io` loaded from /Users/chungquantin/Developer/pop-network/pop-node/pop-api/examples/fungibles/target/release/wbuild/pop-runtime-devnet/target/wasm32-unknown-unknown/release/deps/libsp_io-75e30546d34b7973.rmeta
    = note: second definition in `sp_io` loaded from /Users/chungquantin/Developer/pop-network/pop-node/pop-api/examples/fungibles/target/release/wbuild/pop-runtime-devnet/target/wasm32-unknown-unknown/release/deps/libsp_io-84ac0cd5f82351f7.rmeta

  For more information about this error, try `rustc --explain E0152`.
  error: could not compile `cumulus-primitives-core` (lib) due to 1 previous error
  warning: build failed, waiting for other jobs to finish...

There are another issue related to frame-support was fixed in this PR: #11

Reference: r0gue-io/pop-node#313