Fixed restrictive type information

Author: JamieMair

src/hparams.jl

@@ -112,7 +112,7 @@ to `Float64` when writing the logs.
 `metrics` should be a list of tags, which correspond to scalars that have been logged. Tensorboard will
 automatically extract the latest metric logged to use for this value.
 """
-function write_hparams!(logger::TBLogger, hparams::Dict{String,Any}, metrics::AbstractArray{String})
+function write_hparams!(logger::TBLogger, hparams::Dict{String,<:Any}, metrics::AbstractArray{String})
     PLUGIN_NAME = "hparams"
     PLUGIN_DATA_VERSION = 0