Simplify logic of transposing with inline functions

Fix spelling error

Add and implement IXLAutoFilter.Reapply()

Implement IXLAutoFilter.HiddenRows

Refactor (simplify) filter interfaces: Remove IXLAutoFilter. Rename IXLBaseAutoFilter to IXLAutoFilter. Remove IXLAutoFilter.Set method.

CodeMaid organise and clean autofilter files

Clear all cell contents (formats too) in pivot table range upon loading.

Clear pivot table rendered range upon loading to avoid conflict on rendered cells when opening the file.

Refactor content managers and implement manager for sheetviews

Rename to XLWorksheetContentManager.cs

Move XLWSContentManager to ContentManagers/ dir

Add helper method VisibleRows for autofilters

Skip checks and other logic when new name is same as old name.

Allow pivot tables to have no theme

Exclude files in bin directory from being embedded!

Correctly determine used range when there are merged ranges on a worksheet (fix #881) (#887) ...

* Failing tests added

* Failing tests for predicates added.

* Missing predicates added to LastCellUsed and FirstCellUsed

* Analyze merged ranges with any value of includeFormats flag.

* Use extension method instead of two comparisons

* Use null propagation for predicate

Correctly unprotect worksheet without password

Bump version to 0.94

Ignore pivot table data field base items that are out of range.

Make calculation engine exception public

Upgrade System.Drawing.Common for netstandard2.0 to v4.5.0 (release version)

Use current locale in test instead of invariant culture as CellValue parsing expects localized values.

Make range address invalid on worksheet deleting. ...

Handle invalid ranges in XLNamedRange.
Re-implement XLAddress and XLRangeAddress ToString* methods to correctly process #REF!

Update XLCell.MergedRange to use GetIntersectedRanges

Improve XLCell.SetValue(object) by removing unnecessary TryParse functions ...

Consolidate and improve SetValue(object value) and SetValue<T>(T value)

Fix correct way to save timespan

Remove unnecessary ToInvariantString extension methods. They're already implemented in object.ToInvariantString

Deploy to AppVeyor NuGet feed

Bug fix - unsupported CellValues.String Data type ...

Changes at workbooks loading and unit test with file example to test changes.

Pivot table: DateTime type with empty value (Issue #859 fix) (#860) ...

issue #859 : Pivot table: DateTime type with empty value