Trick Simulation Environment 19.1.0

• New dependency: maven (available from your favorite package manager)
  When the maven repository added the requirement for https it caused a java dependency apocalypse (The Javadepocalypse) across all trick versions and tags. Going forward, Trick will use the maven tool to install its dependencies, preventing any future javadepocalypses.
• New feature: offline mode.
  If you configure with --enable-offline, trick will not try to download java dependencies or web server dependencies. Instead, it will look for the fully built executable .jar files in ${TRICK_HOME}/trick-offline. For this to work, you will need to build the jars once (with internet access) and copy them to this directory. (If you have questions about offline mode please contact me scott.p.fennell@nasa.gov or create a github issue).
• Improved stability for 32-bit mode.
• New example sim: SIM_Lander. Its a lunar lander with graphics and automatic controls!
• Fixed a bug where you could not convert the units of multiple variables in Trick View
• Added a new convert units text field in Trick View.
• Web Server is now disabled by default. To enable, configure with --enable-mongoose.
• New interface functions to turn on/off SIGCHLD handler (may help with input file dependencies that depend on default handler).
• Other fixes and improvements.