Use goreleaser to build and release (#244)

Instead of using gox on one side and an action to release, we can merge
them together with goreleaser which will build for extra targets (arm,
mips if needed in the future) and it also takes care of creating
checksums, a source archive, and a changelog and creating a release with
all the artifacts.

All binaries should respect the old naming convention, so any scripts
out there should still work.

Signed-off-by: Itxaka <igarcia@suse.com>

vendor/github.com/klauspost/compress/zstd/decoder_options.go

@@ -6,7 +6,6 @@ package zstd
 
 import (
 	"errors"
-	"fmt"
 	"runtime"
 )
 
@@ -18,6 +17,7 @@ type decoderOptions struct {
 	lowMem         bool
 	concurrent     int
 	maxDecodedSize uint64
+	dicts          []dict
 }
 
 func (o *decoderOptions) setDefault() {
@@ -42,7 +42,7 @@ func WithDecoderLowmem(b bool) DOption {
 func WithDecoderConcurrency(n int) DOption {
 	return func(o *decoderOptions) error {
 		if n <= 0 {
-			return fmt.Errorf("Concurrency must be at least 1")
+			return errors.New("concurrency must be at least 1")
 		}
 		o.concurrent = n
 		return nil
@@ -60,9 +60,24 @@ func WithDecoderMaxMemory(n uint64) DOption {
 			return errors.New("WithDecoderMaxMemory must be at least 1")
 		}
 		if n > 1<<63 {
-			return fmt.Errorf("WithDecoderMaxmemory must be less than 1 << 63")
+			return errors.New("WithDecoderMaxmemory must be less than 1 << 63")
 		}
 		o.maxDecodedSize = n
 		return nil
 	}
 }
+
+// WithDecoderDicts allows to register one or more dictionaries for the decoder.
+// If several dictionaries with the same ID is provided the last one will be used.
+func WithDecoderDicts(dicts ...[]byte) DOption {
+	return func(o *decoderOptions) error {
+		for _, b := range dicts {
+			d, err := loadDict(b)
+			if err != nil {
+				return err
+			}
+			o.dicts = append(o.dicts, *d)
+		}
+		return nil
+	}
+}