MAINT: update them to quantecon-book-theme=0.2.1

[mmcky]

This updates to use the latest quantecon-book-theme

[mmcky]

@shlff this is a build of: https://python.quantecon.org/intro.html using the latest quantecon-book-theme.

@AakashGfude has done some nice work on refactoring our theme and adding some new features.

It would be great if you could spend a bit of time comparing the current live site with this PR build (as a double check).

Hopefully you won't find many differences :-)

[mmcky]

@shlff also just to clarify - there is no need to recheck the whole site. Just wanted another set of eyes to:

1. do some random spot checks
2. look for some of the issues that have cropped up before

[shlff]

Thanks @mmcky . I randomly selected some lectures and here are all the differences I found (left: live website, right: preview of this PR):

1. bold font for subsubsection titles in the preview
   

2. different arrow style in latex math expressions
   

3. different fontsize for latex math expressions
   

4. extra space above and below code cells in the preview
   

5. problematic fraction forms of math expressions created by python code (the score between fractions is missing)
   

6. centralized between-text math expressions (I think it should be a desired feature.)
   

7. red-colour quoted in-text code (I think it should be a desired feature.)
   

8. the inserted figures aligned to the left (rather than to the center) in the preview
   

9. failure to compile \boldsymbol in the preview
   

10. the color of quoted code in the title is blue rather than red like other in-text quoted code in the preview
    

11. missing latex math expressions in the preview
    

12. different styles for between-text quoted code (I think it should be a desired feature.)
    

13. output is broken into more parts in the preview
    

14. different styles for Note (I think it should be a desired feature.)
    

[mmcky]

thanks @shlff there are some great pickups here. Thank you!

[mmcky]

• bold symbol issue will be added to mathjax config (Update mathjax to use \boldsymbol extension quantecon-book-theme#120)

[mmcky]

@shlff for issue 3 in your list -- I think the actual math is not quite put together as intended.

$$
\begin{aligned} p_0  & = x_0 + x_1/R + x_2/(R^2) + \ddots \\
                 & = x_0 (1 + G R^{-1} + G^2 R^{-2} + \cdots ) \\
                 & = x_0 \frac{1}{1 - G R^{-1}} \end{aligned}
$$

do you think \ddots should be \cdots?

[shlff]

@shlff for issue 3 in your list -- I think the actual math is not quite put together as intended.

$$
\begin{aligned} p_0  & = x_0 + x_1/R + x_2/(R^2) + \ddots \\
                 & = x_0 (1 + G R^{-1} + G^2 R^{-2} + \cdots ) \\
                 & = x_0 \frac{1}{1 - G R^{-1}} \end{aligned}
$$

do you think \ddots should be \cdots?

Thanks @mmcky . I think \ddots is fine, but just find that the font size of the whole math expression in the preview is larger than that from the live website, which might not be an issue.

[mmcky]

• OK svg is now enabled via _config.yml for mathjax
• the fractions issue is now fixed when rendered with svg also (https://609da84c885a4d00bf372a62--nostalgic-wright-5fa355.netlify.app/geom_series.html#back-to-the-keynesian-multiplier)
• the bold font issue in latex is now resolved using svg also (https://609da84c885a4d00bf372a62--nostalgic-wright-5fa355.netlify.app/mle.html#id3)

[mmcky]

thanks @shlff I think we have addressed the content issues that you identified in the lastest update to use svg rendering. If you could take a quick look today (~10min) and let me know it is working on your end that would be great.

[shlff]

Thanks @mmcky . I just checked them and can confirm that issue 5 mentioned above has been solved.

[mmcky]

@AakashGfude @shlff I think we are ready to merge this and deploy python.quantecon.org running quantecon-book-theme=0.2.1