v0.0.103.1

v0.0.103.1

Based on LDK v0.0.103 and LDK-C-Bindings v0.0.103.1, this fixes a number
of minor (and a few major) issues in the Java bindings.

 * Exposes the full Logger interface to Java, with information on
   severity and module which originated the log call.
 * Expose `read` on `MaybeReadable` objects (like `Event`) which may or
   may not read an object which was written (some `Event`s are not
   written to disk).
 * Include documentation from Rust on enum variants.
 * Allow specifying a `UserConfig` object in both
   `ChannelManagerConstructor` constructors.
 * Check array lengths for constant-length arrays (like keys and block
   headers) prior to calling into Rust. This avoids undefined behavior
   (often a crash) when a byte array of incorrect length is passed.
 * Provide a new `is_ok` method on `Result` types instead of requiring
   matching of the object's type.
 * Include missing functions on 3-tuples.
 * Resolve a rare use-after-free when returning an object from a Java
   interface method that was called from Rust.
 * Increase pointer validity checking in `leaktracking` builds.
 * Resolve a NullPointerException when calling trait methods on a Rust
   instance of a trait which was wrapped in an `Option`.
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