Update backend and contracts

scripts/wasmd/contracts/checksums.sha256

@@ -1,4 +1,4 @@
-775f9f8fe7d2ca1ac33ec47799e9b8fd25aa1bf3cf97961f49f091b99e62f85b  cw1_subkeys.wasm
-3e3ea92c4ec35d90aa0bef344bdb0a94939120fce57265d5ff81bf8e8caec7e9  cw3_fixed_multisig.wasm
-a32acdcfe15a2b3c8ba6963cf1e4ab63347725cc35a0f2434696dd492d63fb5f  hackatom.wasm
-089598e3cab468aff26233bc7363c713529124a0f7fd50320461cb58881a2da7  ibc_reflect.wasm
+37f868eda7a723a769f6ff77cc27435455c3cff7b14481a114895d3d93cf8326  cw1_subkeys.wasm
+203ceb9ffa61fdcb34b859a4d1249bec517112ecbaf9a9092b3787dc8199dde6  cw3_fixed_multisig.wasm
+841f5aa187a26018fee0f3398ecba404b3367af03f71e2b938bdc433328e14e9  hackatom.wasm
+70ec2710cd406f6496f165ca4939f921da5b95e708bd82e732dd790c1e8288a4  ibc_reflect.wasm

scripts/wasmd/contracts/download.sh

@@ -2,8 +2,8 @@
 
 # This must get from 2-3 different repos, fix the versions here:
 
-COSMWASM_VERSION="v0.14.0"
-PLUS_VERSION="v0.6.0"
+COSMWASM_VERSION="v0.16.0-rc5"
+PLUS_VERSION="v0.8.0-rc1"
 
 curl -L -O "https://github.com/CosmWasm/cosmwasm/releases/download/${COSMWASM_VERSION}/hackatom.wasm"
 curl -L -O "https://github.com/CosmWasm/cosmwasm/releases/download/${COSMWASM_VERSION}/ibc_reflect.wasm"

scripts/wasmd/env

@@ -1,5 +1,5 @@
 # Choose from https://hub.docker.com/r/cosmwasm/wasmd/tags
 REPOSITORY="cosmwasm/wasmd"
-VERSION="v0.16.0"
+VERSION="v0.18.0-rc1"
 
 CONTAINER_NAME="wasmd"