Allow configuration of TimeStep

[flytzen]

• Added support for specifying the timestep in config
• Updated version and readme

Fixes #206

[asmith3006]

Thank you! Amazing.

[flytzen]

@asmith3006 we don't really have a way to test this... We'll publish it as a beta - when we do, can you test it with your devices and let us know if we can release this?
Thanks 😊

[asmith3006]

Have run this code on a mock console app and tested against a known secret on a physical token and it's working perfectly.

FYI you can also use https://totp.danhersam.com/ to test against a known secret and change the window size for comparison.

Thanks for this! Great work.

[ahwm]

That's about as much as we can do with the tests (and is pretty much what the tests check). Let us know once you're able to test it with a real device as well. Glad to hear it's on the right track!

[asmith3006]

I've compared the output with:

1. Physical token
2. Online generator
3. Powershell script

and all numbers generated by all the systems match perfectly.

I think that's about all the testing I can do, it looks great - thank you!