new test suite.

    to clarify the fact that set_rawdata is not part of the public API. use `update(rawdata=...)` instead.

Resolve "[BUG] in client context the status of format_rawdata is alway True event when failed"

See merge request !72

in mpl_client.sync_fig_format_rawdata(): if server returns an error datas is set to None and error message is printed
in mpl_fig._format_rawdata_client(): if datas returned from the client is None then return False.

Resolve "[Bug] transmitting error message back to client fails"

Closes #102

See merge request !71

Resolve "[Bug] transmitting error message back to client fails"

See merge request !70

                  cast all e.args to string where printted.

                                             add a WARNING in case the Error message
                                                 has a <success Flag> (Status.value == True)

Merge branch '102-transmitting-error-message-fails' of gitlab.aip.de:yfournier/myplotlib into 102-transmitting-error-message-fails

                  cast all e.args to string where printted.

                                             add a WARNING in case the Error message
                                                 has a <success Flag> (Status.value == True)

Resolve "[BUG]: de_sync_fig failing: ID is not string"

Closes #101

See merge request !69

in mpl_server.py: get_fig_by_id(): fig_id -> str(fig_id)

Resolve "[BUG]: de_sync_fig failing: ID is not string"

See merge request !67

in mpl_server.py: get_fig_by_id(): fig_id -> str(fig_id)

in mpl_fig.py: refresh(): add as_seen keyword alike in print_to_file (prevent the call of fig.plot())

Now print_in_notebook should work

add print_in_notebook function

I am afraid that the as_seen feature won't work since
it seems that they call fig.plot before rendering...
I need to dig more.

in mpl_client.py: in read_data(): add a test to check that the io_function is a String and not a function object.
                                  The problem with function objects is that it may be a security issue. The server
	                          has a limited allowed functions (known_functions).
                                  If io_function is not a string, a WARNING is thrown and io_function
				  is replaced with io_function.__name__.

avoiding unecessary formatting.

Conflicts:
	mpl_fig.py

This is done to prevent confusion when using the server/client interface.

format to allow a better merging of data with client.merge_data query
issue is that a MplData object is created on the server side silently...
so the user need to be warned.