to change uses of lists to tuples in existing code. In addition, dicts are
    now supported as a nested structure.

## Changes to contrib APIs

*   Adds tf.contrib.nn.rank_sampled_softmax_loss, a sampled-softmax variant that
    can improve rank loss.
*   `tf.contrib.metrics`.{streaming_covariance,streaming_pearson_correlation}
    modified to return nan when they have seen less or equal to 1 unit of

pkg go/doc, func NewFromFiles(*token.FileSet, []*ast.File, string, ...interface{}) (*Package, error)
pkg go/doc, type Example struct, Suffix string
pkg go/doc, type Func struct, Examples []*Example
pkg go/doc, type Package struct, Examples []*Example
pkg go/doc, type Type struct, Examples []*Example
pkg hash/maphash, func MakeSeed() Seed
pkg hash/maphash, method (*Hash) BlockSize() int
pkg hash/maphash, method (*Hash) Reset()

pkg syscall (freebsd-riscv64), const IFF_RUNNING = 64 #53466
pkg syscall (freebsd-riscv64), const IFF_RUNNING ideal-int #53466
pkg syscall (freebsd-riscv64), const IFF_SIMPLEX = 2048 #53466
pkg syscall (freebsd-riscv64), const IFF_SIMPLEX ideal-int #53466
pkg syscall (freebsd-riscv64), const IFF_SMART = 32 #53466
pkg syscall (freebsd-riscv64), const IFF_SMART ideal-int #53466