escape curly brackets for correlations chart

[lironle6]

Hey,
First pull request so please let me know if I'm doing anything wrong.
Stumbled into an issue which I opened here:
#669
And wanted to contribute my fix to it. It's a more "quick and dirty" solution as I don't know if any other modules are affected by the same issues (I manually tested most and couldn't find any).
The fix itself is pretty straightforward, and if any modules need an escape in the future there's a new parameter to toggle.
Appreciate any and all input regarding the issue/pull.
Thanks!

[aschonfeld]

@shnitzel6 Thanks so much for the PR! I've actually found the issue and am working on merging a branch that fixes it. I appreciate the effort you put in making this PR but there's just too many instances where I could see curly braces being used in a code export where you wouldn't want them escaped. Take your replacement for example:

s = df['Sex']
s = s.replace({'male': '0', 'female': '1'})
df.loc[:, 'Sex'] = s

Thanks again, this really helped me diagnose the issue quickly