The raw, untyped-value form of a cell as it lives in worksheet XML.
Higher-level conversion (shared string lookup, number parsing, boolean
coercion, date formatting) happens in ExVEx.get_cell/3, which has access
to the workbook's shared strings table and stylesheet.
Summary
Types
@type raw_type() ::
:number
| :shared_string
| :boolean
| :inline_string
| :formula_string
| :error
@type t() :: %ExVEx.OOXML.Worksheet.Cell{ formula: String.t() | nil, raw_type: raw_type(), raw_value: String.t() | nil, style_id: non_neg_integer() | nil }