Add support for importing files with absolute relationship target paths.

Add API for setting custom document properties (metadata). Such are visualized by the common editors, e.g. in MS Excel in the File menu.

Example properties that can be set through the document properties are:

- Title
- Subject
- Author
- Last Author
- Creation Date
- Category
- Manager
- Company

KeyNotFoundException: 'The given key was not present in the dictionary.' when reading a document,
due to incorrect "borderId" in "bordersList".

KeyNotFoundException: 'The given key was not present in the dictionary.' when reading a document,
due to incorrect "fontId" in "cellStyleXfs".

Some of the required properties are Orientation and Page size.

Please, implement the filtering feature for the RadSpreadStreamProcessing library.

I'd like to have the following style property available in the SpreadStreamProcessing library:

TextRotation

SpreadProcessing has a method,  cellValue.GetValueAsString(format), which allows the user to apply excel format on a value and get the result. While in SpreadStreamProcessing one could get the format and the value, there is no way to get their result and this is very inconvenient when the values in question are dates.

Add support for hyperlinks export.

Rows import stops after reading a formula cell.

Add support for Rich Text.

Provide API that allows retrieving of the cached formula value

While reading the content, the ReadCellValue method throws NotSupportedException: "The RichText value type is not supported". Although the rich text in the cells is not supported, the library could parse the text content and avoid throwing errors.

When importing a document containing more than one Number Formats (numFmts) with the same format code (formatCode) an exception is thrown: System.InvalidOperationException: 'Same item with different index exists.'

Files exported with SpreadStreamProcessing cannot be read by OleDB consumers

Respectfully request the ability to set the text orientation of a cell. This feature was added to the SpreadProcessing library and we'd like to see it added to  the SpreadStreamProcessing library.

I operate mostly within the streaming version of the spread-processing library, so I don't have an idea of how full-featured the implementation was in SpreadProcessing. My request for the streaming library is to be provided with similar functionality as that which is provided by Excel:

Thank you,

R. J. Lewis III

API that allows you to get the styles and colors from the current theme.

Add support for CSV settings when exporting (delimiter, encoding). 

Exception when exporting a conational formatting rule with no formatting