• Fix issue #32 .
• Fix a problem of log output in Linux environment.
• Update Gradle wrapper version from 7.6 to 8.2.

• Add measurement start time in the first line of the record file.
• Adjust interval between multiple publishers' sending to be interval/num_publishers.
• Update gradle wrapper version: 7.3.3 to 7.6.

Support PEM format files for more easy use of TLS authentication.

• Update Gradle wrapper version to 7.3.3.
• Use java.time.Instant class instead of System.currentTimeMillis
• Change timeunit of publish interval from millisecond to microsecond.
• Change timeunit in latency calculation from millisecond to microsecond.

Change Gradle wrapper version from 6.6.1 to 7.2 for avoiding build error caused by that Gradle 6.x does not support Java 16.

Removed the following JVM options in build.gradle:

• "--illegal-access=deny"
• "--add-opens=java.base/java.net=ALL-UNNAMED"

• Support TLS authentication (including TLS client authentication).
• Introduce configuration file for setting parameters.
• Enable to specify the directory path to write out measurement record files.

Add two parameters -un and -pw to support password authentication.

• Refactor codes.
• Add Gradle Wrapper.
• Support compatibility with Java SE 8 or later.

• Improve the accuracy of the measurement start time calculation.
• Refine the display of results.
• Update usage documents.