Add a rewriter that reifies implicit conversions into a call to the
`__convert` intrinsic. Code generators can recognize this intrinsic and
use it to generate appropriate conversion code.
Part of this work involves redesigning the type annotations system.
Annotations are now only applicable to opaque and object types. Instead
of inspecting annotations directly, code generators should use
`hcl2.GetSchemaForType` to extract the `schema.Type` for a `model.Type`.
Some of the apply rewriter's assumptions were broken by the richer
expressions available in HCL2. These changes fix those broken
assumptions, in particular the assumption that only scope traversal
expressions are sources of eventual values.
* Make `async:true` the default for `invoke` calls (#3750)
* Switch away from native grpc impl. (#3728)
* Remove usage of the 'deasync' library from @pulumi/pulumi. (#3752)
* Only retry as long as we get unavailable back. Anything else continues. (#3769)
* Handle all errors for now. (#3781)
* Do not assume --yes was present when using pulumi in non-interactive mode (#3793)
* Upgrade all paths for sdk and pkg to v2
* Backport C# invoke classes and other recent gen changes (#4288)
Adjust C# generation
* Replace IDeployment with a sealed class (#4318)
Replace IDeployment with a sealed class
* .NET: default to args subtype rather than Args.Empty (#4320)
* Adding system namespace for Dotnet code gen
This is required for using Obsolute attributes for deprecations
```
Iam/InstanceProfile.cs(142,10): error CS0246: The type or namespace name 'ObsoleteAttribute' could not be found (are you missing a using directive or an assembly reference?) [/Users/stack72/code/go/src/github.com/pulumi/pulumi-aws/sdk/dotnet/Pulumi.Aws.csproj]
Iam/InstanceProfile.cs(142,10): error CS0246: The type or namespace name 'Obsolete' could not be found (are you missing a using directive or an assembly reference?) [/Users/stack72/code/go/src/github.com/pulumi/pulumi-aws/sdk/dotnet/Pulumi.Aws.csproj]
```
* Fix the nullability of config type properties in C# codegen (#4379)
These changes add preliminary (read: incomplete) support for
representing Pulumi programs using HCL2. Language-specific code
generators can use this representation as a basis for understanding the
semantics of a Pulumi program.
