support for opening a separate tab

[parmentelat]

before I had this magic, I had written a few documents where I had inserted a link in my notebook to open ipythontutor in a separate tab of the browser; the markdown looked like what's below

it was tedious to have to go to pythontutor, copy and paste the link, etc... but there are times where having the full space of a new tab can be very nice;

it wouldn't be that hard to support that with e.g. something like target=tab as an extra parameter; it would take 2 actions, but that'd still be ok IMO (1, evaluate the cell to create a link; 2, click the link)

• pythontutor

[parmentelat]

handled in #5

[parmentelat]

as of version 0.2.0, the button works fine locally, but won't work whenever the Jupyter server is remote...