Updates for Jinja2 >= 3.1.x

[raffienficiaud]

• importing Markup from MarkupSafe
• replacing evalcontextfilter by pass_eval_context
• making the dependency explicit

[raffienficiaud]

Note: this may conflict with #74 but I can make my code work together with the trick in #73

[j123b567]

It is stated in the jinja2 documentation that one should use pass_eval_context instead of evalcontextfilter but it is not true for this code. In that case, document will be full of <jinja2.nodes.EvalContext object at 0x.....> because the decorator injects first argument, which is not expected here.

Better would be to add context argument

@jinja2.pass_eval_context
def finalize_value(self, ctx, value, *args):

but I don't know any usage for it. I also don't understand, why it even works with previous Jinja versions.

So, the best solution seems to be to completeldy remove the decorator.

[raffienficiaud]

Comment addressed in raffienficiaud#1 : works without issue without those decorators.

[raffienficiaud]

This work is being superseded by this PR: raffienficiaud#1