Add progress on reduced tree fork choice

eth2/fork_choice/fork_choice/Cargo.toml

@@ -0,0 +1,25 @@
+[package]
+name = "fork_choice"
+version = "0.1.0"
+authors = ["Age Manning <Age@AgeManning.com>"]
+edition = "2018"
+
+[[bench]]
+name = "benches"
+harness = false
+
+[dependencies]
+store = { path = "../../beacon_node/store" }
+ssz = { path = "../utils/ssz" }
+types = { path = "../types" }
+log = "0.4.6"
+bit-vec = "0.5.0"
+
+[dev-dependencies]
+criterion = "0.2"
+hex = "0.3.2"
+yaml-rust = "0.4.2"
+bls = { path = "../utils/bls" }
+slot_clock = { path = "../utils/slot_clock" }
+beacon_chain = { path = "../../beacon_node/beacon_chain" }
+env_logger = "0.6.0"