Regression: panflute.elements.builtin2meta no longer supports subclasses of builtins #166
Description
a72ffb5 was first released in 2.0.3. It breaks support for converting subclasses of builtin types to pandoc meta types. This is because it stops using isinstance and directly compares type instead. CC @ickc
This caused the issue mentioned at manubot/rootstock#386 (comment) and #164 (comment):
File "/usr/share/miniconda3/envs/manubot/lib/python3.7/site-packages/panflute/containers.py", line 76, in insert
v = check_type(v, self.oktypes)
File "/usr/share/miniconda3/envs/manubot/lib/python3.7/site-packages/panflute/utils.py", line 71, in check_type
raise TypeError(msg)
TypeError:
Element "MetaList" received "CSL_Item" but expected <class 'panflute.base.MetaValue'>CSL_Item is a dict subclass.