Escape <> and & symbol in doc attributes.

[pellico]

Close #710 The fix escapes only very basic chars <> and & to be as much less intrusive. The fix could be implement without a new dependencies but more escaping may be required in the near future.

[Emilgardis]

Are there cases where we actually want html? Perhaps the description could be using html for nicer formatting

[pellico]

Are there cases where we actually want html? Perhaps the description could be using html for nicer formatting

I am working for the company that generated this SVD and there is no intention to use html. It is just how HW concept engine described a clock signal "HFCLK". In principle we can escape the characters in the SVD comments but this will create a problem for debugger tools. In fact in CMSIS specs html support is not mentioned CMSIS spec.

So we would like to avoid to have two SVD one for debuggers and one SVD2Rust.

If default escaping is not acceptable, will a command line option be acceptable ?

[Emilgardis]

Alright, this is fine then, a string is not necessarily html :)

The ci error is due to let else being a 1.65 feature, we can bump the minimally supported rust version (MSRV)

[pellico]

Thank you. Let me know if I have to do anything else.

[Emilgardis]

Feel free to add a commit to bump the msrv, it needs to change in the readme and ci

the existing changelog entry for msrv can be changed to 1.65 also

[bors[bot]]

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