Update required packages and specify in DESCRIPTION

[nolmacdonald]

Reference: Issue #17

REASON

All current code needs to be reformatted to follow the Tidyverse Style Guide.
This will allow for cleaner code and use of the linter + styling.

DESIGN

• Look at acceptable code for loops, spacing, embracing, etc.
• Documentation should follow guide when discussing packages
• importFrom may be helpful
• Should add NEWS.md at this point in development
• Follow Git commit messages recommendations
• Change helpers to follow error messages style. Uses cli::cli_abort()
  • An error message should start with a general statement of the problem then give a concise description of what went wrong. Consistent use of punctuation and formatting makes errors easier to parse.
• Issue with .data$ may be resolved with select(all_of(var)). See tidyverse blog post
• Also add changes to git templates so that labels are automatically assigned

IMPACT

Nothing new, just cleaned up code for the nuclearff package.