Allow using a NewWriteThrough() blockstore.

[hsanjuan]

Similar to blockservice.NewWriteThrough().

Currently the default blockstore trades read amplification for every write. While this is fine in cases where writes are very expensive and the datastore offers a quick Has() method, it is not always the case.

Some datastore backends may be better off just getting all the writes no matter what. At least I would like to try it out.

[github-actions]

Suggested version: v1.3.0

Comparing to: v1.2.0 (diff)

Changes in go.mod file(s):

diff --git a/go.mod b/go.mod
index 6161e15..5fe47bc 100644
--- a/go.mod
+++ b/go.mod
@@ -15,4 +15,25 @@ require (
 	go.uber.org/atomic v1.6.0
 )
 
-go 1.16
+require (
+	github.com/gogo/protobuf v1.2.1 // indirect
+	github.com/google/uuid v1.1.1 // indirect
+	github.com/jbenet/goprocess v0.1.4 // indirect
+	github.com/mattn/go-colorable v0.1.1 // indirect
+	github.com/mattn/go-isatty v0.0.5 // indirect
+	github.com/minio/blake2b-simd v0.0.0-20160723061019-3f5f724cb5b1 // indirect
+	github.com/minio/sha256-simd v0.1.1-0.20190913151208-6de447530771 // indirect
+	github.com/mr-tron/base58 v1.1.3 // indirect
+	github.com/multiformats/go-base32 v0.0.3 // indirect
+	github.com/multiformats/go-base36 v0.1.0 // indirect
+	github.com/multiformats/go-multibase v0.0.3 // indirect
+	github.com/multiformats/go-varint v0.0.5 // indirect
+	github.com/opentracing/opentracing-go v1.0.2 // indirect
+	github.com/spaolacci/murmur3 v1.1.0 // indirect
+	github.com/whyrusleeping/go-logging v0.0.0-20170515211332-0457bb6b88fc // indirect
+	golang.org/x/crypto v0.0.0-20190611184440-5c40567a22f8 // indirect
+	golang.org/x/net v0.0.0-20190620200207-3b0461eec859 // indirect
+	golang.org/x/sys v0.0.0-20190412213103-97732733099d // indirect
+)
+
+go 1.19

gorelease says:

# summary
Suggested version: v1.3.0

gocompat says:

Your branch is up to date with 'origin/master'.

Cutting a Release (and modifying non-markdown files)

This PR is modifying both version.json and non-markdown files.
The Release Checker is not able to analyse files that are not checked in to master. This might cause the above analysis to be inaccurate.
Please consider performing all the code changes in a separate PR before cutting the release.

Automatically created GitHub Release

A draft GitHub Release has been created.
It is going to be published when this PR is merged.
You can modify its' body to include any release notes you wish to include with the release.

[Jorropo]

@hsanjuan LGTM Thx, I can merge it, but just so you know Kubo use the v0 branch of this package.
https://github.com/ipfs/go-datastore this is one of thoses forked even tho we don't admit packages, I see you based your work on v1.2.0 are you sure this is good for you ?
Forget this, I mistaken go-datastore and go-ipfs-blockstore.

[Jorropo]

Ty