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What's new in this version:

Major Changes:
- ILSpy 6.0 sports a multi-tab docking interface
- ILSpy 6.0 comes with a new Metadata Explorer
- ILSpy 6.0 has new icons for high-DPI support
- ILSpy 6.0 requires at least .NET 4.7.2 (v5.0 required .NET 4.6.2)

New Language Features:
- C# 8.0: Indexing and Slices (Ranges)
- C# 7.0: Changes to syntactic disambiguation of generic identifiers
- C# 7.3 pattern-based fixed statement
- C# 8.0 Default Interface Methods
- C# 8.0 Async streams (currently not covering await foreach)
- C# 8.0 await using
- C# 8.0 Readonly members
- Decompile calli instructions using C# 9.0 function pointer syntax
- Improved support for Unsafe intrinsics
- Support for generic and static local functions

UI Improvements:
- Docking and multi tab support
- Metadata Explorer
- Assembly list dropdown in toolbar, enhanced assembly list management
- Show target frameworks next to the assembly version in the tree-view
- Using the middle mouse button to click on tree nodes and links will open the decompilation result in a new tab
- "Select PDB" context menu: allows to change the PDB file resolved by ILSpy or pick one from a different location
- Added a "Debug Metadata Explorer" node for portable PDBs
- Use XAML for icons (high DPI)
- New icons (based on VS 2017 icon pack)
- RichText Tooltips
- Add "Open with ILSpy" entry to the Windows Explorer context menu on exe and dll files (via Options/Misc)
- Empty metadata tables can now be hidden from the tree view
- Folding for XAML output
- Add "Reset to defaults" in Options dialog
- Dynamic assembly list generation for target framework

Improvements & Bug-fixes:
- Project export: Added an option to allow SDK-style format for project files
- Solution and project decompilation: Add missing ProjectTypeGuids
- Add search features
- #1498: Remove Fusion API usage: Use standard file enumeration instead. This should enable us to use the GAC even with restricted access, as only the LIST permission is required
- Fix DotNetCorePathFinder to properly support netstandard2.1
- Fix multi-module support
- Updated links to MS Docs
- Improve ReduceNestingTransform by considering nested containers
- Analyzers: Added "Implements interface"-Analyzer
- Analyzer follow type forwarders
- The decompiler now supports Scalar Replacement Of Aggregates, which by default only works on display-classes and display-structs. There is an option to make it affect all instances and uses of plain types containing fields only. NOTE: It is still in preview stage. You can activate it when using a debug build.
- Added support for null-propagation on unconstrained generic expressions
- Added support for [module: NullablePublicOnly]
- Enhanced assembly resolution to distinguish target frameworks and use the correct references in case there are multiple versions of framework assemblies loaded.
- Better decompilation of local functions, pinned regions and display-classes
- Disassembler: actually make use of the cancellation token
- Support VB Select Case on string
- Display System.Void as struct
- Properly decompile auto events with tuples
- Do not change accessibility of non-transformed local functions
- Improve drag&drop support
- Fix bug in stackalloc initializer detection involving Span
- Added struct constructor initializer pattern
- DotNetCorePathFinder: Various bug fixes when working with .net core assemblies
- Transform post-increment on float/double
- Fix extra minus sign when formatting -0 on .NET Core 3.0
- Fix sealed modifier on interface methods with no body
- Fix NullReferenceException when foreach decompilation is turned off
- Fixed performance problem when using an assembly from a MemoryStream