Update chenagelog and readme for version 0.2.0

CHANGELOG.md

@@ -1,5 +1,30 @@
 # Change Log
 
+## [0.2.0] - 2023-10-28
+
+### Added
+
+- Backup files rotation based on modified date.
+- Command line switch to provide custom configuration.
+- RemoveFile function to StorageBackend interface
+- GenerateDummyFiles that generates dummy file info for DummyBackend.ListFiles
+- Getters for FileInfo fields
+- SetDefaultValues pointer receiver that resets fields of Config struct to default values
+- Implement new handler for command line arguments
+
+### Fixed
+
+- Refactor & extend test suite.
+- Various spelling mistakes.
+
+### Changed
+
+- Expect second command line argument to be path to a prefix on storage backend (no longer a path to file).
+- Add '.age' to file extension only when encryption is enabled.
+- LoadConfigFromFile and LoadConfigFromEnv are now pointer receivers of Config.
+- Run as local user in docker container during build and test.
+- Mount local go build cache into the docker container during build and test.
+
 ## [0.1.0] - 2023-09-17
 
 _First release._

README.md

@@ -13,9 +13,22 @@ Then it will store the output file to a storage backen (currently only BackBlaze
 
 ```shell
 $ squirrelup
-Usage: squirrelup backup_dir output_uri
-   create an (optionally) encrypted gzip-compressed TAR file and upload it to storage backend.
-   At the moment only BackBlaze B2 cloud storage is implemented.
+Usage: squirrelup <backup_dir> <output_prefix_uri>
+    Create an (optionally) encrypted gzip-compressed TAR file and upload it to storage backend.
+    At the moment only BackBlaze B2 cloud storage is implemented.
+
+Required arguments:
+    <backup_dir>                  Path to local directory that serves as backup root.
+    <output_prefix_uri>           Remote URI prefix.
+
+Optional arguments:
+    --config, -c <config_file>    Path to local config file.
+    --verbose, -v                 Verbose output.
+
+BackBlaze B2 Backend:
+    <output_prefix_uri> must follow the pattern 'b2://<bucket>/<path>/<to>/<prefix>/'.
+
+Default configuration is stored under <config_path>.
 ```
 
 ## Requirements
@@ -31,6 +44,14 @@ Build squirrelup by running:
 make build
 ```
 
+## Test
+
+Run the test suite for squirrelup by running:
+
+```shell
+make test
+```
+
 ## Acknowledgements
 
 Project template generated using [inizio](https://github.com/insidieux/inizio)