Remove chrono dependency from Cargo.toml.

It was moved to `lib/time.toml`.

CHANGELOG.md

@@ -4,21 +4,19 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
-
-## [Unreleased]
-
-### Bug fix
-
-- Segfault in the Java API in `transactionCommitDumpChanges`.
-
-## [0.40.2] - May 10, 2021
+## [0.40.2] - May 11, 2021
 
 ### Libraries
 
 - `time.dl`: Improved support for times and dates.  The library now uses the
   `chrono` crate (instead of `time`) internally, which in particular supports
   timezones.
 
+### Bug fix
+
+- Segfault in the Java API in `transactionCommitDumpChanges`.
+
+
 ## [0.40.1] - May 7, 2021
 
 ### Libraries

rust/template/Cargo.toml

@@ -17,7 +17,6 @@ c_api = ["differential_datalog/c_api"]
 [dependencies]
 abomonation = "0.7"
 time = { version = "0.2", features = ["serde"] }
-chrono = { version = "0.4", features = ["serde"] }
 ordered-float = { version = "2.0.0", features = ["serde"] }
 cpuprofiler = { version = "0.0", optional = true }
 #differential-dataflow = "0.11.0"