Emphasize -impute- option

[jorpppp]

We have received a few questions about the impute option in xtevent 2.0.0. I think we need to make this change more visible.

@Constantino-Carreto-Romero will:

• Add a short paragraph about impute in the home screen (about.md) (Do this on a branch)
• Create a short markdown describing imputation details. We'll eventually add a link to these from the home screen. (Do this on an issue folder, we'll find a place for it eventually).

[jorpppp]

@Constantino-Carreto-Romero still working on this.

[jorpppp]

@Constantino-Carreto-Romero still working on this.

[jorpppp]

Pending.

[jorpppp]

Pending, should be done this week @Constantino-Carreto-Romero

[Constantino-Carreto-Romero]

@jorpppp, on the home page,

• I added a paragraph about the impute option and highlighted that the user should use impute(stag) to have the results of xtevent 1.0.0.
• There, I added a link to a note about the impute option. I was writing it in markdown but I ran into the markstat command that helped me add some examples. Maybe we could use it for the examples on the home page, as well.

[jorpppp]

Per call:

• Do not have a separate bullet with "about the impute option". Put it in the first bullet of the update.
• Put in this order:

Bold: To produce equivalent results as with xtevent 1.0.0, where the default was to impute the endpoints, the user should use impute(stag). Then, explain what the impute option does (combine the two explanations).

[jorpppp]

@jorpppp will review the note about the impute option here: https://raw.githack.com/JMSLab/xtevent/issue103_emphasize_impute_option/issue103/impute_option_description.html

This markstat package seems useful, we could use it for the examples on the home page.

[jorpppp]

Per call: It would be good to have the math behind this.

[Constantino-Carreto-Romero]

In https://github.com/JMSLab/xtevent/commit/fe7fd51efdd0b06b7768b617babd9ce53cbff294 I implemented https://github.com/JMSLab/xtevent/issues/103#issuecomment-1284192661

It is pending https://github.com/JMSLab/xtevent/issues/103#issuecomment-1289525176

Edit: for future reference, this is the tutorial I followed about the markstat package

[jorpppp]

@Constantino-Carreto-Romero implemented the last formatting edits for these examples, so we are ready to pull.

Edit: Before pulling, we'll open a new issue for the documentation behind the impute option. We'll move the draft of the documentation file there, and we'll delete the issue folder here before PR.

[Constantino-Carreto-Romero]

Summary: In this issue, we added a paragraph on the home page to emphasize the -impute- option and created an HTML file describing this option.

Thread continues in https://github.com/JMSLab/xtevent/pull/121