Describe the release of v1.4

Author: thewizardplusplus

CHANGE_LOG.md

@@ -2,6 +2,50 @@
 
 ## [v1.4](https://github.com/thewizardplusplus/go-code-runner/tree/v1.4) (2021-05-15)
 
+Refactoring, improving of the unit tests, and the few new minor features.
+
+- compiling of a code written in the Go programming language:
+  - support for the running time management (via the Go context);
+- refactoring:
+  - adding of the `systemutils` package:
+    - adding of the `systemutils.SaveTemporaryText()` function;
+    - adding of the `systemutils.RunCommand()` function:
+      - adding of the unit tests;
+  - improving of the `coderunner` package:
+    - accepting of an allowed import set directly instead of building it automatically;
+    - `coderunner.CompileCode()` function:
+      - making optional of automatic importing of the packages used in the code;
+      - improving of the unit tests;
+  - improving of the `testrunner` package:
+    - passing of a runner of a single test case as a dependency.
+
+### Features
+
+- saving of a code to a temporary file:
+  - storing of the temporary file with the code to an individual temporary directory;
+- checking of package imports used in the code written in the Go programming language:
+  - checking based on the set of allowed imports;
+- compiling of a code written in the Go programming language:
+  - automatic importing of the packages used in the code (optionally);
+  - checking of package imports used in the code (optionally):
+    - checking based on the set of allowed imports;
+  - enriching of an error of the external command running by an output from the stderr stream;
+  - support for the running time management (via the Go context);
+- running of the compiled code (i.e. the executable file):
+  - passing of a custom input as the stdin stream;
+  - returning of an output from the stdout stream;
+  - enriching of an error of the external command running by an output from the stderr stream;
+  - support for the running time management (via the Go context);
+- running of a test case set for the compiled code (i.e. the executable file):
+  - representation of a test case:
+    - input;
+    - expected output;
+  - checking of an actual output in each test case:
+    - returning of the [sentinel errors](https://dave.cheney.net/2016/04/27/dont-just-check-errors-handle-them-gracefully#sentinel%20errors):
+      - failed running — it returns on a running error;
+      - unexpected output — it returns when the expected and actual outputs do not match;
+  - support for the running time management (via the Go context).
+
 ## [v1.3](https://github.com/thewizardplusplus/go-code-runner/tree/v1.3) (2021-04-06)
 
 Support for the running time management (via the Go context).