Merge "floss: hcidoc: Remove dependency to tokio"

chrono = "0.4"

num-derive = "0.3"

num-traits = "0.2"

tokio = { version = "1.0", features = ['bytes', 'fs', 'io-util', 'libc', 'macros', 'memchr', 'mio', 'net', 'num_cpus', 'rt', 'rt-multi-thread', 'sync', 'time', 'tokio-macros'] }