Delete field when deleting column from table

Merge branch 'net40' into metadata-extractor

When setting culture, do it for every time a test is run.

Implement MetadataExtractor to get image dimensions and format

Merge remote-tracking branch 'origin/drop-dataTable-asEnumerable' into netstandard2 ...

# Conflicts:
#	ClosedXML/Excel/Cells/XLCell.cs

Improve color support and more

Add ability to insert data of datatable directly without converting to Enumerable - preparation for .NET Standard

Allow rename of sheet by changing case

Allow duplicate picture names when loading a file, but don't allow duplicate Ids

Allow ridiculous, but valid formulas, e.g. =+++++++MID(A3,3,5)

Allow minimum of 3 parameters for VLOOKUP / HLOOKUP

Default range lookup to true if parameter is EmptyValueExpression

Clear list of deleted worksheets after save to prevent exception on multiple saves.

Add unit test

When copying a worksheet, named ranges on the source worksheet have to point to the new destination sheet. Fixes #416

Fall back to display name if table name is missing.

Allow new style functions with period, e.g. FLOOR.MATH ...

Better parsing exceptions
Implement FLOOR.MATH

Reformat indentation.

Allow table field rename by setting cell value. Fixes #285

Correctly implement MOD function

Fully implement FLOOR function

Add option to clear row height

Move row height / column width when inserting new rows / columns. Fixes #350

Create XLWorkbook from template file

Implement searching for text helper methods

Merge branch 'develop' of https://github.com/ClosedXML/ClosedXML into develop

Allow tranposed InsertData

Correctly handle table column names with line breaks. Fixes #392

Merge pull request #380 from igitur/issue376-worksheet-style-ignored-when-setting-cell-value-via-a-row-reference ...

Use worksheet style if range base style is empty

Use worksheet style if range base style is empty