[GSoC'21] Pr:5 . Complete the JSON saver

CONTRIBUTING.md

@@ -22,7 +22,7 @@ New **code files** should include a [short-form SPDX ID](https://spdx.org/ids) a
 // SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
 ```
 
-New **documentation files** should include a [short-form SPDX ID](https://spdx.org/ids) at the top, indicating the project license for code, which is CC-BY-4.0. This should look like the following:
+New **documentation files** should include a [short-form SPDX ID](https://spdx.org/ids) at the top, indicating the project license for documentation, which is CC-BY-4.0. This should look like the following:
 
 ```
 SPDX-License-Identifier: CC-BY-4.0

README.md

@@ -1,42 +1,39 @@
 [![Build Status](https://github.com/spdx/tools-golang/workflows/build/badge.svg)](https://github.com/spdx/tools-golang/actions)
 [![Coverage Status](https://coveralls.io/repos/github/spdx/tools-golang/badge.svg)](https://coveralls.io/github/spdx/tools-golang)
 
-# tools-golang
+# SPDX tools-golang
 
 tools-golang is a collection of Go packages intended to make it easier for
 Go programs to work with [SPDX®](https://spdx.org/) files.
 
-This software is in an early state, and its API may change significantly.
-
 ## Recent news
 
-2021-03-20: **v0.1.0**: initial pre-v1 release tagged, prior to making more
-extensive API changes in some pending PRs.
+2021-07-04: **v0.2.0**: added support for parsing SPDX JSON files as well as
+other improvements and bugfixes. See [RELEASE-NOTES.md](./RELEASE-NOTES.md)
+for full details.
 
 ## What it does
 
 tools-golang currently works with files conformant to versions 2.1 and 2.2
-of the SPDX specification, available at: https://spdx.org/specifications
+of the SPDX specification, available at: https://spdx.dev/specifications
 
 tools-golang provides the following packages:
 
 * *spdx* - in-memory data model for the sections of an SPDX document
-* *tvloader* - tag-value file loader
-* *tvsaver* - tag-value file saver
-* *rdfloader* - RDF file loader
+* *tvloader* - tag-value document loader
+* *tvsaver* - tag-value document saver
+* *rdfloader* - RDF document loader
+* *jsonloader* - JSON document loader
 * *builder* - builds "empty" SPDX document (with hashes) for directory contents
 * *idsearcher* - searches for [SPDX short-form IDs](https://spdx.org/ids/) and builds SPDX document
 * *licensediff* - compares concluded licenses between files in two packages
 * *reporter* - generates basic license count report from SPDX document
+* *spdxlib* - various utility functions for manipulating SPDX documents in memory
 * *utils* - various utility functions that support the other tools-golang packages
 
 Examples for how to use these packages can be found in the `examples/`
 directory.
 
-RDF support was added by @RishabhBhatnagar as part of his Google Summer of
-Code 2020 project, and is in the process of being merged into the main
-tools-golang code.
-
 ## What it doesn't do
 
 tools-golang doesn't currently do any of the following:
@@ -56,6 +53,19 @@ tools-golang uses https://github.com/spdx/gordf to manage RDF input and output.
 Other than that, tools-golang does not require anything outside the Go standard
 library.
 
+## Contributors
+
+Thank you to all of the contributors to spdx/tools-golang. A full list can be
+found in the GitHub repo and in [the release notes](RELEASE-NOTES.md).
+
+In particular, thank you to the following for major contributions:
+
+JSON parsing support was added by @specter25 as part of his Google Summer of
+Code 2021 project.
+
+RDF parsing support was added by @RishabhBhatnagar as part of his Google Summer
+of Code 2020 project.
+
 ## Licenses
 
 As indicated in `LICENSE-code`, tools-golang **source code files** are

RELEASE-NOTES.md

@@ -0,0 +1,43 @@
+SPDX-License-Identifier: CC-BY-4.0
+
+# Release Notes for spdx/tools-golang
+
+## 0.2.0
+
+Released on: 2021-07-04
+
+### New Features and Enhancements
+* Add support for parsing SPDX JSON: #72, #75, #83, #84, #87
+  * bug fixes in interim versions: #77, #78, #79, #80, #81, #82
+* Improve handling of multiple hash checksum types: #41, #49, #60
+* Enable filtering relationships by various relationship types: #71, #74
+* Improve package license visibility: #65, #66
+* Rename primary branch to 'main': #69
+* Add release notes and push release: #85, #90
+
+### Bug fixes
+* Fix multiline (`<text>`) wrapping for various fields: #31, #53, #58, #89, #76
+* Fix special SPDX IDs in right-hand side of Relationships: #59, #63, #68
+* Throw error when parsing tag-value elements without SPDX IDs: #26, #64
+* Fix missing colon in 'excludes' for Package Verification Code when saving tag-value documents: #86, #88
+* Fix incorrect license statement: #70
+
+### Contributors
+* @autarch
+* @bisakhmondal
+* @ianling
+* @matthewkmayer
+* @RishabhBhatnagar
+* @specter25
+* @swinslow
+
+## 0.1.0
+
+Released on: 2021-03-20
+
+### Contributors
+* @abhishekspeer
+* @goneall
+* @RishabhBhatnagar
+* @rtgdk
+* @swinslow