contributions.adoc: add 2 tables of public Gradle packages (#122)

* contributions.adoc:  add 2 tables of public Gradle packages

* contributions.adoc:  "Blocks" library is now linked to JCenter

* contributions.adoc:  refine description of the "Blocks" library

docs/modules/contributions/pages/contributions.adoc

@@ -1,6 +1,15 @@
 = Contributions
 :revnumber: 2.0
 :revdate: 2020/07/11
+:url-bintray: https://bintray.com
+:url-contribs: https://github.com/jMonkeyEngine-Contributions
+:url-core: https://hub.jmonkeyengine.org/badges/103/core-developer
+:url-enginelib: https://github.com/jMonkeyEngine/jmonkeyengine/tree/master
+:url-forum-user: https://hub.jmonkeyengine.org/u
+:url-github: https://github.com
+:url-jitpack: https://jitpack.io
+:url-mirrors: https://github.com/jMonkeyEngine-mirrors
+:url-wiki: https://wiki.jmonkeyengine.org/docs/3.3
 
 The following list contains additional content for jMonkeyEngine 3 contributed by users. They are, as is the engine itself, open-source - Feel free to download and use them for your projects. :)
 
@@ -12,6 +21,404 @@ To install a jMonkeyEngine SDK plugin, go to `menu:Tools[Plugins>Available Plugi
 ====
 
 
+== Libraries with Maven coordinates
+
+JMonkeyEngine projects built using https://gradle.org/[Gradle]
+or https://maven.apache.org/[Maven]
+can easily incorporate pre-built libraries from public Maven repositories.
+
+=== At JCenter
+
+The table below lists JME-related libraries available primarily from JCenter.
+"GroupID:ArtifactID" entries link to Bintray package information;
+follow these links to determine the version ID of the latest release.
+"Name" entries link to relevant documentation, if any.
+
+[cols="20,20,15,35,10",grid="none",options="header"]
+|===
+|Name
+|Purpose
+|Maintainer(s)
+|GroupID:ArtifactID
+|Source code
+
+|https://1337atr.weebly.com/jttf.html[jME-TTF]
+|Render TrueType fonts
+|{url-forum-user}/TRyder[Tryder]
+|{url-bintray}/tryder/maven/jme-ttf[com.atr:jme-ttf]
+|{url-github}/ATryder/jME-TTF[GitHub]
+
+
+|{url-github}/stephengold/Heart#readme[Heart]
+|General-purpose toolkit
+|{url-forum-user}/sgold[sgold]
+|{url-bintray}/stephengold/com.github.stephengold/Heart[com.github.stephengold:Heart]
+|{url-github}/stephengold/Heart[GitHub]
+
+|{url-github}/stephengold/jme3-utilities#readme[Jme3-utilities-nifty]
+|Graphical user interface
+|{url-forum-user}/sgold[sgold]
+|{url-bintray}/stephengold/com.github.stephengold/jme3-utilities-nifty[com.github.stephengold:jme3-utilities-nifty]
+|{url-github}/stephengold/jme3-utilities/tree/master/nifty[GitHub]
+
+|{url-github}/stephengold/jme3-utilities#readme[Jme3-utilities-ui]
+|Modal hotkeys and help screens
+|{url-forum-user}/sgold[sgold]
+|{url-bintray}/stephengold/com.github.stephengold/jme3-utilities-ui[com.github.stephengold:jme3-utilities-ui]
+|{url-github}/stephengold/jme3-utilities/tree/master/ui[GitHub]
+
+|https://stephengold.github.io/Minie/minie/overview.html[Minie]
+|3-D physics simulation
+|{url-forum-user}/sgold[sgold]
+|{url-bintray}/stephengold/com.github.stephengold/Minie[com.github.stephengold:Minie]
+|{url-github}/stephengold/Minie[GitHub]
+
+|{url-github}/stephengold/SkyControl#readme[SkyControl]
+|Sky simulation
+|{url-forum-user}/sgold[sgold]
+|{url-bintray}/stephengold/com.github.stephengold/SkyControl[com.github.stephengold:SkyControl]
+|{url-github}/stephengold/SkyControl[GitHub]
+
+|{url-github}/stephengold/Wes#readme[Wes]
+|Animation editing and retargeting
+|{url-forum-user}/sgold[sgold]
+|{url-bintray}/stephengold/com.github.stephengold/Wes[com.github.stephengold:Wes]
+|{url-github}/stephengold/Wes[GitHub]
+
+
+
+|{url-mirrors}/jfx-11-jme-embedded-jayfella-github#readme[jfx-11-jme-embedded]
+|Embed JME into JavaFX
+|(none)
+|{url-bintray}/jayfella/com.jayfella/jfx-11-jme-embedded[com.jayfella:jfx-11-jme-embedded]
+|{url-mirrors}/jfx-11-jme-embedded-jayfella-github[GitHub]
+
+|{url-mirrors}/jme-easings-jayfella-github#readme[jme-easing]
+|Easing functions for animation
+|(none)
+|{url-bintray}/jayfella/com.jayfella/jme-easing[com.jayfella:jme-easing]
+|{url-mirrors}/jme-easings-jayfella-github[GitHub]
+
+|{url-mirrors}/jme-fastnoise-jayfella-github#readme[jme-fastnoise]
+|Generate 2-D noise
+|(none)
+|{url-bintray}/jayfella/com.jayfella/jme-fastnoise[com.jayfella:jme-fastnoise]
+|{url-mirrors}/jme-fastnoise-jayfella-github[GitHub]
+
+|{url-mirrors}/jme-jfx-11-jayfella-github#readme[jme-jfx-11]
+|JavaFX GUI bridge
+|(none)
+|{url-bintray}/jayfella/com.jayfella/jme-jfx-11[com.jayfella:jme-jfx-11]
+|{url-mirrors}/jme-jfx-11-jayfella-github[GitHub]
+
+|{url-mirrors}/jme-position-plotters-jayfella-github#readme[jme-position-plotters]
+|Place things randomly on a mesh
+|(none)
+|{url-bintray}/jayfella/com.jayfella/jme-position-plotters[com.jayfella:jme-position-plotters]
+|{url-mirrors}/jme-position-plotters-jayfella-github[GitHub]
+
+|{url-mirrors}/jme-swing-devkit-jayfella-github#readme[jme-swing-devkit]
+|Development kit using Swing
+|(none)
+|{url-bintray}/jayfella/com.jayfella/jme-swing-devkit[com.jayfella:jme-swing-devkit]
+|{url-mirrors}/jme-swing-devkit-jayfella-github[GitHub]
+
+|{url-mirrors}/jme-world-pager-jayfella-github#readme[jme-world-pager]
+|Generate infinite worlds
+|(none)
+|{url-bintray}/jayfella/com.jayfella/jme-world-pager[com.jayfella:jme-world-pager]
+|{url-mirrors}/jme-world-pager-jayfella-github[GitHub]
+
+|{url-mirrors}/lemur-menubar-jayfella-github#readme[Lemur-MenuBar]
+|Menu system for the Lemur GUI
+|(none)
+|{url-bintray}/jayfella/com.jayfella/lemur-menubar[com.jayfella:lemur-menubar]
+|{url-mirrors}/lemur-menubar-jayfella-github[GitHub]
+
+|{url-mirrors}/lemur-themer-jayfella-github#readme[Lemur-Themer]
+|Create and edit Lemur GUI themes
+|(none)
+|{url-bintray}/jayfella/com.jayfella/lemur-themer[com.jayfella:lemur-themer]
+|{url-mirrors}/lemur-themer-jayfella-github[GitHub]
+
+|{url-mirrors}/plugin-manager-jayfella-github#readme[Plugin Manager]
+|Framework for software plugins
+|(none)
+|{url-bintray}/jayfella/com.jayfella/plugin-manager[com.jayfella:plugin-manager]
+|{url-mirrors}/plugin-manager-jayfella-github[GitHub]
+
+|{url-mirrors}/property-inspector-jayfella-github#readme[Property Inspector]
+|Lemur GUI to edit object properties
+|(none)
+|{url-bintray}/jayfella/com.jayfella/property-inspector[com.jayfella:property-inspector]
+|{url-mirrors}/property-inspector-jayfella-github[GitHub]
+
+
+|{url-github}/rvandoosselaer/Blocks/wiki[Blocks]
+|Customizable voxel engine
+|{url-forum-user}/remy_vd[remy_vd]
+|{url-bintray}/remyvd/rvandoosselaer/blocks[com.rvandoosselaer:blocks]
+|{url-github}/rvandoosselaer/Blocks[GitHub]
+
+
+|JME Convert
+|Asset conversion
+|{url-forum-user}/pspeed[pspeed]
+|{url-bintray}/simsilica/Sim-tools/jmec[com.simsilica:jmec]
+|{url-github}/Simsilica/JmeConvert[GitHub]
+
+|{url-contribs}/Lemur/wiki[Lemur]
+|Modular lightweight user interface
+|{url-forum-user}/pspeed[pspeed]
+|{url-bintray}/simsilica/Sim-tools/lemur[com.simsilica:lemur]
+|{url-contribs}/Lemur[GitHub]
+
+|Lemur-props
+|Lemur GUI panel for editable bean properties
+|{url-forum-user}/pspeed[pspeed]
+|{url-bintray}/simsilica/Sim-tools/lemur-props[com.simsilica:lemur-props]
+|{url-contribs}/Lemur/tree/master/extensions/LemurProps[GitHub]
+
+|{url-contribs}/Lemur/wiki[Lemur-proto]
+|More Lemur GUI components in incubation
+|{url-forum-user}/pspeed[pspeed]
+|{url-bintray}/simsilica/Sim-tools/lemur-proto[com.simsilica:lemur-proto]
+|{url-contribs}/Lemur/tree/master/extensions/LemurProto[GitHub]
+
+|{url-github}/Simsilica/SimEthereal/wiki[Sim-Ethereal]
+|Synchronize objects over a network
+|{url-forum-user}/pspeed[pspeed]
+|{url-bintray}/simsilica/Sim-tools/sim-ethereal[com.simsilica:sim-ethereal]
+|{url-github}/Simsilica/SimEthereal[GitHub]
+
+|Sim-Math
+|Double-based 3-D math
+|{url-forum-user}/pspeed[pspeed]
+|{url-bintray}/simsilica/Sim-tools/sim-math[com.simsilica:sim-math]
+|{url-github}/Simsilica/SimMath[GitHub]
+
+|SiO2
+|General-purpose game toolkit
+|{url-forum-user}/pspeed[pspeed]
+|{url-bintray}/simsilica/Sim-tools/sio2[com.simsilica:sio2]
+|{url-github}/Simsilica/SiO2[GitHub]
+
+|{url-contribs}/zay-es/wiki[Zay-ES]
+|Entity component system (ECS)
+|{url-forum-user}/pspeed[pspeed]
+|{url-bintray}/simsilica/Sim-tools/zay-es[com.simsilica:zay-es]
+|{url-contribs}/zay-es[GitHub]
+
+|{url-contribs}/zay-es/wiki[Zay-ES-Net]
+|Zay-ES networking layer
+|{url-forum-user}/pspeed[pspeed]
+|{url-bintray}/simsilica/Sim-tools/zay-es-net[com.simsilica:zay-es-net]
+|{url-contribs}/zay-es/tree/master/extensions/Zay-ES-Net[GitHub]
+
+
+|{url-wiki}/documentation.html[jme3-android]
+|Support for Android platforms JNI
+|{url-core}[Core developers]
+|{url-bintray}/jmonkeyengine/org.jmonkeyengine/jme3-android[org.jmonkeyengine:jme3-android]
+|{url-enginelib}/jme3-android[GitHub]
+
+|{url-wiki}/documentation.html[jme3-android-native]
+|Support for Android platforms native code
+|{url-core}[Core developers]
+|{url-bintray}/jmonkeyengine/org.jmonkeyengine/jme3-android-native[org.jmonkeyengine:jme3-android-native]
+|{url-enginelib}/jme3-android-native[GitHub]
+
+|{url-wiki}/documentation.html[jme3-blender]
+|Blender importer
+|(none)
+|{url-bintray}/jmonkeyengine/org.jmonkeyengine/jme3-blender[org.jmonkeyengine:jme3-blender]
+|{url-contribs}/BlenderLoader[GitHub]
+
+|{url-wiki}/physics/physics.html[jme3-bullet]
+|3-D physics simulation JNI
+|{url-core}[Core developers]
+|{url-bintray}/jmonkeyengine/org.jmonkeyengine/jme3-bullet[org.jmonkeyengine:jme3-bullet]
+|{url-enginelib}/jme3-bullet[GitHub]
+
+|{url-wiki}/physics/physics.html[jme3-bullet-native]
+|3-D physics simulation desktop native code
+|{url-core}[Core developers]
+|{url-bintray}/jmonkeyengine/org.jmonkeyengine/jme3-bullet-native[org.jmonkeyengine:jme3-bullet-native]
+|{url-enginelib}/jme3-bullet-native[GitHub]
+
+|{url-wiki}/documentation.html[jme3-bullet-native-android]
+|3-D physics simulation Android native code
+|{url-core}[Core developers]
+|{url-bintray}/jmonkeyengine/org.jmonkeyengine/jme3-bullet-native-android[org.jmonkeyengine:jme3-bullet-native-android]
+|{url-enginelib}/jme3-bullet-native-android[GitHub]
+
+|{url-wiki}/documentation.html[jme3-core]
+|Game engine core
+|{url-core}[Core developers]
+|{url-bintray}/jmonkeyengine/org.jmonkeyengine/jme3-core[org.jmonkeyengine:jme3-core]
+|{url-enginelib}/jme3-core[GitHub]
+
+|{url-wiki}/documentation.html[jme3-desktop]
+|Support for desktop platforms
+|{url-core}[Core developers]
+|{url-bintray}/jmonkeyengine/org.jmonkeyengine/jme3-desktop[org.jmonkeyengine:jme3-desktop]
+|{url-enginelib}/jme3-desktop[GitHub]
+
+|{url-wiki}/documentation.html[jme3-effects]
+|Filters and special effects
+|{url-core}[Core developers]
+|{url-bintray}/jmonkeyengine/org.jmonkeyengine/jme3-effects[org.jmonkeyengine:jme3-effects]
+|{url-enginelib}/jme3-effects[GitHub]
+
+|{url-wiki}/documentation.html[jme3-examples]
+|Engine test/example/demo apps
+|{url-core}[Core developers]
+|{url-bintray}/jmonkeyengine/org.jmonkeyengine/jme3-examples[org.jmonkeyengine:jme3-examples]
+|{url-enginelib}/jme3-examples[GitHub]
+
+|{url-wiki}/documentation.html[jme3-ios]
+|Support for iOS platforms
+|{url-core}[Core developers]
+|{url-bintray}/jmonkeyengine/org.jmonkeyengine/jme3-ios[org.jmonkeyengine:jme3-ios]
+|{url-enginelib}/jme3-ios[GitHub]
+
+|{url-wiki}/physics/physics.html[jme3-jbullet]
+|3-D physics simulation on JVM
+|{url-core}[Core developers]
+|{url-bintray}/jmonkeyengine/org.jmonkeyengine/jme3-jbullet[org.jmonkeyengine:jme3-jbullet]
+|{url-enginelib}/jme3-jbullet[GitHub]
+
+|{url-wiki}/documentation.html[jme3-jogg]
+|Play OGG audio files
+|{url-core}[Core developers]
+|{url-bintray}/jmonkeyengine/org.jmonkeyengine/jme3-jogg[org.jmonkeyengine:jme3-jogg]
+|{url-enginelib}/jme3-jogg[GitHub]
+
+|{url-wiki}/documentation.html[jme3-jogl]
+|JOGL backend
+|{url-forum-user}/gouessej[gouessej]
+|{url-bintray}/jmonkeyengine/org.jmonkeyengine/jme3-jogl[org.jmonkeyengine:jme3-jogl]
+|{url-enginelib}/jme3-jogl[GitHub]
+
+|{url-wiki}/documentation.html[jme3-lwjgl]
+|LWJGL v2 backend
+|{url-core}[Core developers]
+|{url-bintray}/jmonkeyengine/org.jmonkeyengine/jme3-lwjgl[org.jmonkeyengine:jme3-lwjgl]
+|{url-enginelib}/jme3-lwjgl[GitHub]
+
+|{url-wiki}/documentation.html[jme3-lwjgl3]
+|LWJGL v3 backend
+|{url-core}[Core developers]
+|{url-bintray}/jmonkeyengine/org.jmonkeyengine/jme3-lwjgl3[org.jmonkeyengine:jme3-lwjgl3]
+|{url-enginelib}/jme3-lwjgl3[GitHub]
+
+|{url-wiki}/networking/networking.html[SpiderMonkey]
+|Multi-player networking
+|{url-core}[Core developers]
+|{url-bintray}/jmonkeyengine/org.jmonkeyengine/jme3-networking[org.jmonkeyengine:jme3-networking]
+|{url-enginelib}/jme3-networking[GitHub]
+
+|{url-wiki}/core/gui/nifty_gui.html[Nifty]
+|Graphical user interface
+|{url-core}[Core developers]
+|{url-bintray}/jmonkeyengine/org.jmonkeyengine/jme3-niftygui[org.jmonkeyengine:jme3-niftygui]
+|{url-enginelib}/jme3-niftygui[GitHub]
+
+|{url-wiki}/documentation.html[jme3-plugins]
+|Import more file formats
+|{url-core}[Core developers]
+|{url-bintray}/jmonkeyengine/org.jmonkeyengine/jme3-plugins[org.jmonkeyengine:jme3-plugins]
+|{url-enginelib}/jme3-plugins[GitHub]
+
+|{url-wiki}/core/terrain/terrain.html[TerraMonkey]
+|Terrain
+|{url-core}[Core developers]
+|{url-bintray}/jmonkeyengine/org.jmonkeyengine/jme3-terrain[org.jmonkeyengine:jme3-terrain]
+|{url-enginelib}/jme3-terrain[GitHub]
+
+|{url-wiki}/core/vr/virtualreality.html[jme3-vr]
+|Virtual reality
+|{url-core}[Core developers]
+|{url-bintray}/jmonkeyengine/org.jmonkeyengine/jme3-vr[org.jmonkeyengine:jme3-vr]
+|{url-enginelib}/jme3-vr[GitHub]
+
+
+|===
+
+=== At other public repositories
+
+The table below lists JME-related libraries available primarily
+from public Maven repositories other than JCenter.
+"GroupID:ArtifactID" entries link to package information;
+follow these links to determine the version ID of the latest release.
+"Name" entries link to relevant documentation, if any.
+
+[cols="20,20,15,35,10",grid="none",options="header"]
+|===
+|Name
+|Purpose
+|Maintainer(s)
+|Maven repository URL +
+ GroupID:ArtifactID
+|Source code
+
+|{url-github}/riccardobl/jme3-bullet-vhacd#readme[V-HACD Collision Shape Factory]
+|Decompose meshes into convex collision shapes
+|{url-forum-user}/RiccardoBlb[RiccardoBlb]
+|\https://jitpack.io +
+ {url-jitpack}/#riccardobl/jme3-bullet-vhacd[com.github.riccardobl:jme3-bullet-vhacd]
+|{url-github}/riccardobl/jme3-bullet-vhacd[GitHub]
+
+|{url-github}/riccardobl/jme-igui#readme[jme-IGUI]
+|Immediate graphical user interface
+|{url-forum-user}/RiccardoBlb[RiccardoBlb]
+|\https://jitpack.io +
+ {url-jitpack}/#riccardobl/jme-igui[com.github.riccardobl:jme-igui]
+|{url-github}/riccardobl/jme-igui[GitHub]
+
+
+|{url-github}/riccardobl/jme-igui#readme[Effekseer Native]
+|Render effects made with Effekseer
+|{url-forum-user}/RiccardoBlb[RiccardoBlb]
+|\https://dl.bintray.com/riccardo/effekseer +
+ {url-bintray}/riccardo/effekseer/jme-effekseerNative[com.jme.effekseer:jme-effekseerNative]
+|{url-github}/riccardobl/jme-effekseerNative[GitHub]
+
+|{url-github}/jmePhonon/jmePhonon#readme[jmePhonon]
+|Steam(R) audio
+|{url-forum-user}/RiccardoBlb[RiccardoBlb]
+|\https://dl.bintray.com/jmephonon/jmePhonon +
+ {url-bintray}/jmephonon/jmePhonon/jmePhonon[com.jme3.phonon:jmePhonon]
+|{url-github}/jmePhonon/jmePhonon[GitHub]
+
+
+|{url-wiki}/documentation.html[jme3-testdata]
+|Assets for engine test/example/demo apps
+|{url-core}[Core developers]
+|\https://dl.bintray.com/jmonkeyengine/org.jmonkeyengine +
+ {url-bintray}/jmonkeyengine/org.jmonkeyengine/jme3-testdata[org.jmonkeyengine:jme3-testdata]
+|{url-enginelib}/jme3-testdata[GitHub]
+
+
+|{url-wiki}/contributions/gui/tonegodgui/tonegodgui.html[ToneGod GUI]
+|Native graphical user interface
+|(none)
+|\https://dl.bintray.com/stephengold/tonegod +
+ {url-bintray}/stephengold/tonegod/tonegodgui[tonegod:tonegodgui]
+|{url-github}/stephengold/tonegodgui[GitHub]
+
+
+|{url-github}/riccardobl/f3b#readme[F3b]
+|Import assets from Blender
+|{url-forum-user}/RiccardoBlb[RiccardoBlb]
+|\https://dl.bintray.com/riccardo/f3b +
+ {url-bintray}/riccardo/f3b/jme_f3b[wf.frk.f3b:jme_f3b]
+|{url-github}/riccardobl/f3b[GitHub]
+
+
+|===
+
+
 == Github Repo
 
 This is the main repository for jmonkey contributions: