Fix bhi160::SensorDataIter

Closes #7

See merge request !14

increase internal position at end of next function

Fix redundant import of core::fmt::Write

See merge request !12

Correct the target architecture in the build command.

See merge request !11

Add erorr handling for BHI160  sensors.

See merge request !8

Introduces an error type for bhi160 related methods and update
potential failing methods to return results. This should ensure that
it is not possible to encounter a panic during sensor interaction.

This will also:

 - add minor cleanups in `bhi160.rs`,
 - update the example to use the `?` operator instead of `unwrap()`.

this repo is now l0dable-only and l0dables can't be debugged?

Readme: Turn references into links.

See merge request !7

fix missing ';' and fix stdint.h and stddef.h header search path as
environment variable