added softplus relu
added softplus relu
sjwhitworth/golearn,sjwhitworth/golearn,thedadams/golearn,thedadams/golearn,sjwhitworth/golearn,sjwhitworth/golearn,EtienneBruines/golearn,EtienneBruines/golearn,thedadams/golearn,sjwhitworth/golearn,thedadams/golearn,EtienneBruines/golearn