Started to make a pass over Chapter 5

[TobiasWrigstad]

Pushing WIP here so that interested parties can follow along

[TobiasWrigstad]

I have now updated the code in §5.4 (§5.3 skipped for now).

I have based the working program on source-academy/source-programs#39 and made some very minor changes to get closer to the original.

There is a hack and some minor deviations in the code that needs addressing.

[TobiasWrigstad]

I am getting some XML linting errors e.g. when inside a <JAVASCRIPT_RUN> tag I use a < operator... Is there a way around this?

[martin-henz]

I am getting some XML linting errors e.g. when inside a <JAVASCRIPT_RUN> tag I use a < operator... Is there a way around this?

Yes, < and > need to be represented in XML as < and >. XML parsers seem to differ in how strictly they enforce this.

[martin-henz]

I am getting some XML linting errors e.g. when inside a <JAVASCRIPT_RUN> tag I use a < operator... Is there a way around this?

Yes, < and > need to be represented in XML as < and >. XML parsers seem to differ in how strictly they enforce this.

Also && needs to be &&. (there are some of those in 5.5.)