Fix parsing for one dimensional tensors into an npy file (#94)

Author: christopherzimmerman

spec/io/data/single_rank_tensor.npy

@@ -27,4 +27,10 @@ describe Tensor do
     expected = Tensor.new([5, 5]) { |i| i }
     Num::Testing.tensor_equal(result, expected).should be_true
   end
+
+  it "reads a rank 1 tensor from a file" do
+    result = Tensor(Int32, CPU(Int32)).from_npy("#{__DIR__}/data/single_rank_tensor.npy")
+    expected = [1, 2, 3, 4].to_tensor
+    Num::Testing.tensor_equal(result, expected).should be_true
+  end
 end

spec/io/io_spec.cr

@@ -48,7 +48,7 @@ class Tensor(T, S)
     file.read_fully(header)
     size = IO::Memory.new(header).read_bytes(Int16, IO::ByteFormat::LittleEndian)
 
-    header = file.read_string(size).downcase.tr("()'", "[]\"").gsub(/,]|],/, "]")
+    header = file.read_string(size).downcase.tr("()'", "[]\"").gsub(/,],|],/, "]")
     json_header = JSON.parse(header)
 
     dtype = json_header["descr"].as_s