Update changelog for 3.16 release.

Author: efritz

CHANGELOG.md

@@ -13,6 +13,17 @@ All notable changes to `src-cli` are documented in this file.
 
 ### Added
 
+### Changed
+
+### Fixed
+
+### Removed
+
+## 3.16
+
+### Added
+
+- Add `--no-progress` flag to the `lsif upload` command to disable verbose output in non-TTY environments.
 - `SRC_HEADER_AUTHORIZATION="Bearer $(...)"` is now supported for authenticating `src` with custom auth proxies. See [auth proxy configuration docs](AUTH_PROXY.md) for more information. [#239](https://github.com/sourcegraph/src-cli/pull/239)
 - Pull missing docker images automatically. [#191](https://github.com/sourcegraph/src-cli/pull/191)
 - Searches that result in errors will now display any alerts returned by Sourcegraph, including suggestions for how the search could be corrected. [#221](https://github.com/sourcegraph/src-cli/pull/221)