Update JRuby version

Author: monkstone

CHANGELOG.md

@@ -1,3 +1,5 @@
+v2.4.2 Update to JRuby-9.2.19, getting ready for JRuby-9.3+.
+
 v2.4.1 patch library loader, add PGS library examples.
 
 v2.4.0 Refactor noise to two modules, FastNoise (default) & SmoothNoise, with terrain noise `:tnoise` option.

README.md

@@ -1,7 +1,7 @@
 __C6H3N3O7__ [![Gem Version](https://badge.fury.io/rb/picrate.svg)](https://badge.fury.io/rb/picrate)![Travis CI](https://travis-ci.org/ruby-processing/PiCrate.svg)
 
 # PiCrate
-New version for `Buster` on raspberryPI 3B+ works with jdk11 (reflective access warnings fixed for jdk11). Since version 2.0.1 also works on 64 bit Manjaro distro on RaspberryPI4. Create processing sketches in ruby on raspberry-pi and linux (this project is a parallel development of [propane][propane] targetting the raspberry-pi, but will initially be developed on a regular linux box). The aim is to produce a gem installable app that can be run with jruby, with minimal dependencies. Drop the `C` and you get pirate, or and an `e` and get `PiCreate`, a happy coincidence?
+Version for `Raspberry Pi OS` on raspberryPI 3B+ works with jdk11 (reflective access warnings fixed for jdk11). That also works on 64 bit `ManjaroArm` distro on RaspberryPI4. Create processing sketches in ruby on raspberry-pi and linux (this project is a parallel development of [propane][propane] targetting the raspberry-pi, but will initially be developed on a regular linux box). The aim is to produce a gem installable app that can be run with jruby, with minimal dependencies. Drop the `C` and you get pirate, or and an `e` and get `PiCreate`, a happy coincidence?
 
 
 ### To install from rubygems ###
@@ -19,7 +19,7 @@ Requires java to build (and [jogl-2.4.0-rc jars][jogl_jars]), but uses a maven w
 ```bash
 cd PiCrate # or whatever you call it
 rake # assumes an installed version of vanilla processing
-jgem install picrate-2.4.1-java.gem
+jgem install picrate-2.4.2-java.gem
 
 ```
 To create a template sketch:-