Using 'content' as a metadata key breaks frontmatter #96
Description
If I have a file with content as a key in the frontmatter, frontmatter dies a horrible death.
Example markdown file (test.md):
---
content: bad key
---
Ooops!Example python file (badkey.py):
import frontmatter
post = frontmatter.load('test.md')When running python badkey.py you get:
$ python badkey.py
Traceback (most recent call last):
File "/home/harleypig/work/pfm/badkey.py", line 3, in <module>
post = frontmatter.load('test.md')
File "/home/harleypig/.local/lib/python3.10/site-packages/frontmatter/__init__.py", line 150, in load
return loads(text, encoding, handler, **defaults)
File "/home/harleypig/.local/lib/python3.10/site-packages/frontmatter/__init__.py", line 166, in loads
return Post(content, handler, **metadata)
TypeError: Post.__init__() got multiple values for argument 'content'