https://maven.apache.org/configure.html
Options to always give to the mvn CLI. This file doesn't support comments,
which is largely the reason this README exists.
--also-make tells Maven to use the Reactor to recognize inter-module
dependencies and include them in the build whenever necessary. This is generally
desirable in a multi-module project.
In addition to saving typing on the command line, using --also-make as a
default gets IntelliJ's main build & run functions working without failing to
resolve the inter-module deps or running afoul of the Enforcer plugin, as
long as you use the "Delegate IDE build/run actions to Maven" setting.