*   Speed up matrix * vector multiplication and matrix * matrix with unknown
    shapes.
*   C API: Graph imports now support input remapping, control dependencies, and
    returning imported nodes (see `TF_GraphImportGraphDefWithReturnOutputs()`)
*   Multiple C++ API updates.
*   Multiple TensorBoard updates including:
    *   Users can now view image summaries at various sampled steps (instead of

    * It's mainly syntax sugar, a convenience for developer experience.
    * Now `Request`, `Response`, `WebSocket`, `status` can be imported directly from `fastapi` as in `from fastapi import Response`. This is because those are frequently used, to use the request directly, to set headers and cookies, to get status codes, etc.

pkg go/ast, func MergePackageFiles(*Package, MergeMode) *File
pkg go/ast, func NewIdent(string) *Ident
pkg go/ast, func NewObj(ObjKind, string) *Object
pkg go/ast, func NewPackage(*token.FileSet, map[string]*File, Importer, *Scope) (*Package, error)
pkg go/ast, func NewScope(*Scope) *Scope
pkg go/ast, func NotNilFilter(string, reflect.Value) bool
pkg go/ast, func PackageExports(*Package) bool