Shift + Tab doesn't work on windows


console log
```
[I 14:07:15.788 NotebookApp] Kernel started: d0a39400-56ca-4720-a765-e0b0c615a41
2
[I 14:07:17.988 NotebookApp] Adapting to protocol v5.1 for kernel d0a39400-56ca-
4720-a765-e0b0c615a412
Exception in thread "Thread-1" java.nio.file.InvalidPathException: Illegal char
<:> at index 2: /D:/PR/TWOSIGMA/beakerx/beakerx/beakerx/kernel/base/lib/base.jar

at sun.nio.fs.WindowsPathParser.normalize(WindowsPathParser.java:182)
at sun.nio.fs.WindowsPathParser.parse(WindowsPathParser.java:153)
at sun.nio.fs.WindowsPathParser.parse(WindowsPathParser.java:77)
at sun.nio.fs.WindowsPath.parse(WindowsPath.java:94)
at sun.nio.fs.WindowsFileSystem.getPath(WindowsFileSystem.java:255)
at java.nio.file.Paths.get(Paths.java:84)
at com.twosigma.beakerx.inspect.Inspect.getInspectFile(Inspect.java:61)
at com.twosigma.beakerx.inspect.Inspect.doInspect(Inspect.java:48)
at com.twosigma.beakerx.evaluator.BaseEvaluator.inspect(BaseEvaluator.java:264)
at com.twosigma.beakerx.evaluator.EvaluatorManager.inspect(EvaluatorManager.java:64)
at com.twosigma.beakerx.kernel.Kernel.inspect(Kernel.java:195)
at com.twosigma.beakerx.handler.InspectHandler.handleMsg(InspectHandler.java:55)
at com.twosigma.beakerx.handler.InspectHandler.lambda$handle$0(InspectHandler.java:47)
at com.twosigma.beakerx.handler.KernelHandlerWrapper.wrapBusyIdle(KernelHandlerWrapper.java:25)
at com.twosigma.beakerx.handler.InspectHandler.handle(InspectHandler.java:46)
at com.twosigma.beakerx.handler.InspectHandler.handle(InspectHandler.java:32)
at com.twosigma.beakerx.socket.KernelSocketsZMQ.handleShell(KernelSocketsZMQ.java:184)
at com.twosigma.beakerx.socket.KernelSocketsZMQ.run(KernelSocketsZMQ.java:163)
[I 14:07:39.780 NotebookApp] KernelRestarter: restarting kernel (1/5), keep random ports
WARNING:root:kernel d0a39400-56ca-4720-a765-e0b0c615a412 restarted
```