Add contributors

[sebaheg]

Issue to add contributors using all-contributors.

[sebaheg]

@all-contributors please add @sebaheg for code

[allcontributors]

@sebaheg

I've put up a pull request to add @sebaheg! 🎉

[sebaheg]

@all-contributors please add @nelson-sommerfeldt for ideas

[allcontributors]

@sebaheg

This project's configuration file has malformed JSON: .all-contributorsrc. Error:: Unexpected token { in JSON at position 460

[sebaheg]

@all-contributors please add @nelson-sommerfeldt for ideas

[allcontributors]

@sebaheg

I've put up a pull request to add @nelson-sommerfeldt! 🎉