Merge branch '1.8.9' into 1.9.4

24c58cb Merge branch '1.8' into 1.8.9
1ffeb01 Update jGui
c122d30 Merge branch '1.8-path-segments' into 1.8
27fd25a Fix crash when server responds with garbage to language query (fixes #51)
db6b0ff Fix / by 0 when two spectator keyframes are closer than 50ms (fixes #60)
d61d0ac Fix hand of invisible spectated player being visible (fixes #59)
f7460f9 Re-enable time path after path playback (fixes #55)
bdbffd5 Add Catmull-Rom spline interpolator to simplepathing
5cbfd28 Generate interpolator settings from InterpolatorType enum
6095aef Fix loading and storing of default interpolator with settings
3f52336 Revert "Fix AbstractMethodError caused by FG2.0 not supporting lambdas (fixes #58)"
c6293bc Update to FG2.2
c8126ed Merge '1.8' into 1.8.9
64898ce Fix NPE when saving recorded resource pack
70e3e54 Fix AbstractMethodError caused by FG2.0 not supporting lambdas (fixes #58)
3f2b3d6 Fix replacing source file in Replay Editor (fixes #57)
d2def94 Fix duration of replays corrupted because of JVM/OS crash
2c64030 Refactor simple pathing timeline logic into dedicated class with unit tests Fix logic for user-set interpolators
4deb374 Enable validation on focus change for all number input fields
5302bca Fix id and text of Replay Editor button in docs
057edcc Manually inject root cert for cross-signed LetsEncrypt cert in requests
cd16211 Register new Property to imply that the path segment following a keyframe has a user-set interpolator instead of the default Modified Keyframe GUI to allow for custom Path interpolator

src/main/java/com/replaymod/recording/packet/ResourcePackRecorder.java

@@ -26,6 +26,7 @@ import javax.annotation.Nonnull;
 import java.io.File;
 import java.io.IOException;
 import java.io.OutputStream;
+import java.util.HashMap;
 import java.util.Map;
 
 /**
@@ -52,6 +53,9 @@ public class ResourcePackRecorder {
             boolean doWrite = false; // Whether we are the first and have to write it
             synchronized (replayFile) { // Need to read, modify and write the resource pack index atomically
                 Map<Integer, String> index = replayFile.getResourcePackIndex();
+                if (index == null) {
+                    index = new HashMap<>();
+                }
                 if (!index.containsValue(hash)) {
                     // Hash is unknown, we have to write the resource pack ourselves
                     doWrite = true;