v0.0.4-rc1

Changelog

d87f9d4 cmd/cue: allow incomplete in vet
61c220f all: add .gitignore
633834d all: add homebrew config to goreleaser
f23a596 all: and go.sum
128976f all: update sync dependency
4fcba03 cmd/cue: fix deduplication of message in vet
ad3fde1 cue/build: get rid of ParseOptions
70108ad cue/errors: convert more errors to cue/errors.Error
2d9b769 cue/format: allow invalid identifiers as labels
4954491 cue/format: simplify Node API
eadbea7 cue/load: allow file overlays
2c18c7c cue/load: allow storing module in cue.mod
065bfd4 cue: change Reference to return Instance as well
1dbda0e cue: fix gen.go and rerun go generate
99d1872 cue: limit validation depth
1700232 cue: use v2 of abitrary precision decimal package
ef90d5c encoding/openapi: add option to close over imported types
a0d2a40 encoding/openapi: simplify based on user-defined format
93e9597 encoding/protobuf: add Builder API
ffe4ced encoding/protobuf: don't make oneOf required by default
f9bd63e encoding/protobuf: don't map google.protobuf types
eae20e0 encoding/protobuf: don't mark a single enum value as default
13a9d4d encoding/protobuf: remove test binary