docs(changelog): update older release histories with actual changes

Historically, several versions in the changelog only had generic
version bump messages. This update fills in the missing details of
actual features and bug fixes by referencing the Git commit log.

- Add specific change logs for versions v1.3.3 through v1.3.15
- Include missing details for features like new command-line options
- Document bug fixes for API pagination, normalization, and downloads

CHANGELOG.md

@@ -37,36 +37,41 @@ All notable changes to this project will be documented in this file.
 
 ## [1.3.15] - 2026-05-01
 
-### Changed
-- Bumped package version to 1.3.15.
+### Fixed
+- Apply NFC normalization to filenames and folder names sent to the server.
 
 ## [1.3.14] - 2026-04-17
 
 ### Changed
 - Simplified `config list` command (removed `-l`/`--long` option, always display URL).
+- Renamed `--quick` option to `--quiet` for `ls` subcommand.
 
 ### Added
 - Added subcommand aliases for config commands (e.g. `ls` alias for list, `rm` alias for delete).
+- Added `version` command.
 
 ## [1.3.13] - 2025-07-02
 
-### Changed
-- Bumped package version to 1.3.13.
+### Fixed
+- Fixed pagination logic for the `file.list` API.
 
 ## [1.3.12] - 2025-05-20
 
-### Changed
-- Bumped package version to 1.3.12.
+### Fixed
+- Fixed bug where file downloading was skipped incorrectly when `-s`/`--skip-if-file-exists` option was present.
 
 ## [1.3.11] - 2025-01-21
 
-### Changed
-- Bumped package version to 1.3.11.
+### Fixed
+- Follow-up fixes for User API specification changes.
 
 ## [1.3.10] - 2024-12-23
 
+### Added
+- Delete broken files and show a summary when a file download fails.
+
 ### Changed
-- Bumped package version to 1.3.10.
+- Updated dependency libraries.
 
 ## [1.3.9] - 2024-10-23
 
@@ -75,8 +80,11 @@ All notable changes to this project will be documented in this file.
 
 ## [1.3.8] - 2024-09-18
 
-### Changed
-- Bumped package version to 1.3.8.
+### Added
+- Implemented `-s`/`--skip-if-file-exists` option for `download` command.
+
+### Fixed
+- Added exception handling for unexpected responses from the server.
 
 ## [1.3.7] - 2024-07-22
 
@@ -85,23 +93,29 @@ All notable changes to this project will be documented in this file.
 
 ## [1.3.6] - 2024-07-08
 
-### Changed
-- Bumped package version to 1.3.6.
+### Added
+- Support cancelling recursive downloads if downloading some files fails.
 
 ## [1.3.5] - 2024-07-08
 
-### Changed
-- Bumped package version to 1.3.5.
+### Added
+- Added authorization token validation checks for file download operations.
+
+### Removed
+- Removed unnecessary debug code.
 
 ## [1.3.4] - 2024-07-04
 
 ### Added
 - Added some aliases for config sub command.
 
+### Fixed
+- Fixed bug when uploading large files.
+
 ## [1.3.3] - 2024-02-13
 
-### Changed
-- Bumped package version to 1.3.3.
+### Added
+- Implemented `-s`/`--skip-if-file-exists` option for `upload` command.
 
 ## [1.3.2] - 2024-02-09