FastExpressionCompiler.Internal.src 3.0.0-preview-07

## v3.0.0 - Major feature release The version contains a lot of fixes and improvements and hopefully as-little-as-possible breaking changes. ### **FastExpressionCompiler** and **FastExpressionCompiler.LightExpression** - Performance and memory consumption is improved, especially for the expressions with the closure and for expressions with the nested lambdas. - Filled the gaps in the expressions support. - Many fixes in the IL emit. - Adds `ToCSharpString()` to output the compile-able C# code described by the expression (tries hard). - Adds `ToExpressionString()` to output the valid expression construction syntax, so given an expression object you'll get e.g. `Lambda(New(...))`. - Adds optional `enum CompilerFlags { Default, NoInvocationLambdaInlining, EnableDelegateDebugInfo}` parameter for the compilation - `EnableDelegateDebugInfo` adds the diagnostic info into the compiled delegate including its source Expression and C# code. Can be used as following: ```cs var f = e.CompileFast(true, CompilerFlags.EnableDelegateDebugInfo); var di = f.Target as IDelegateDebugInfo; Assert.IsNotNull(di.Expression); Assert.IsNotNull(di.ExpressionString); Assert.IsNotNull(di.CSharpString); ``` ### **FastExpressionCompiler.LightExpression** - Now includes the `ExpressionVisitor`. - Improves the compatibility (the drop-in replacement) between `FastExpressionCompiler.LightExpression.Expression` and `System.Linq.Expression`. - Decreasing the memory consumed by the created expressions, plus implementing the `IArgumentProvider` and `IParameterProvider` for some of the expressions. ### The full list of fixes [Milestone v3.0.0](https://github.com/dadhi/FastExpressionCompiler/milestone/19)