FastExpressionCompiler.src 4.2.1

## v4.2.1 Feature and bug-fix release - fix: ImTools should disable the nullable context - fix: nullable property - fix: Incorrect il for struct indexer - fix: Fix or support return ref value - fix: Incorrect il when passing by ref value ## Contributors * @sebastienros made contribution in https://github.com/dadhi/FastExpressionCompiler/pull/412 ## Full Changelog https://github.com/dadhi/FastExpressionCompiler/compare/v4.2.0...v4.2.1 ## v4.2.0 Feature and bug-fix release - feat: #133 Optimize Switch Expression - feat: #393 Support ToCSharpString of the block in the ternary expression - feat: #396 Optimize conditional expressions with the DefaultExpression left or right operand the same way as ConstantExpression - fix: #390 System.AccessViolationException when mapping using Mapster - fix: #391 ToCSharpString outputs ? for Nullable which does not produce the compile-able code - fix: #392 ToExpressionString wrongly declares Label instead of LabelTarget array - fix: #394 Calling a user defined == operator runs into a CLR invalid program exception - fix: #397 Fix and optimize the Switch support - fix: #399 Coalesce nullable with 0 is not working - fix: #400 Fix the direct assignment of Try to Member expression because indirect assignment through tmp var works - fix: #401 Invoke inlining is not working with collections in AutoMapper tests - fix: #404 An expression with a single parameter concatenated to a string causes 'Exception has been thrown by the target of an invocation' during delegate invocation - fix: #405 NullReferenceException with V4.X when using long?[] - fix: #406 NullReferenceException with V4.X - fix: #407 NullReferenceException when setting the Enum field - fix: #408 Dictionary mapping failing when the InvocationExpression inlining is involved ## v4.1.0 Small feature and bug release - added: #379 Add direct net8.0 target as soon as Appveyor CI will support it - fixed: #380 Comparisons with nullable types - fixed: #381 NullReferenceException with V4.X when trying to map - fixed: #386 Value can not be null(parametr 'meth') ## v4.0.1 Bug-fix release - fixed: #374 CompileFast doesn't work with HasFlag ## v4.0.0 Major release - fixed: #352 xxxAssign doesn't work with MemberAccess - fixed: #353 NullReferenceException when calling CompileFast() results - fixed: #357 Invalid program exception - fixed: #366 FastExpressionCompiler[v3.3.4] gives incorrect results in some linq operations - fixed: #368 Fix duplicate nested lambda compilation - fixed: #374 CompileFast doesn't work with HasFlag - added: #264 Optimize the array index emit to emit specific Ldelem_ code instead of generic Ldelem - added: #273 Implement IArgumentProvider for the BlockExpression to minimize the consumed memory - added: #346 Is it possible to implement ref local variables? - added: #359 Improve the performance of variable lookup - added: #367 Better diagnostics and debugging with error codes from Collect and Compile rounds - added: #369 Decrease memory occupied by the LightExpression Block by storing Expression in SmallList (partly on stack) - added: #370 Optimize any nested lambda compilation (LINQ) by compiling right after collect one-by-one - added: #372 Support LightExpression.Expression.TryConvertDelegateIntrinsic for converting one type of delegate to another - added: #373 Support custom C# printing for the LightExpression.Expression