Suppress some warnings, remove Java 7 @SafeVarargs annotation

stream/src/main/java/com/annimon/stream/Collectors.java

@@ -19,6 +19,7 @@
  *
  * @see Collector
  */
+@SuppressWarnings({"WeakerAccess", "unused", "RedundantTypeArguments"})
 public final class Collectors {
 
     private static final Supplier<long[]> LONG_2ELEMENTS_ARRAY_SUPPLIER = new Supplier<long[]>() {

stream/src/main/java/com/annimon/stream/ComparatorCompat.java

@@ -14,6 +14,7 @@
  *
  * @since 1.1.6
  */
+@SuppressWarnings("WeakerAccess")
 public final class ComparatorCompat<T> implements Comparator<T> {
 
     private static final ComparatorCompat<Comparable<Object>>

stream/src/main/java/com/annimon/stream/DoubleStream.java

@@ -19,7 +19,6 @@
  * @since 1.1.4
  * @see Stream
  */
-@SuppressWarnings("WeakerAccess")
 public final class DoubleStream implements Closeable {
 
     /**

stream/src/main/java/com/annimon/stream/Exceptional.java

@@ -32,6 +32,7 @@
  *
  * @param <T> the type of the inner value
  */
+@SuppressWarnings({"WeakerAccess", "UnusedReturnValue"})
 public class Exceptional<T> {
 
     /**

stream/src/main/java/com/annimon/stream/IntStream.java

@@ -17,7 +17,6 @@
  * A sequence of primitive int-valued elements supporting sequential operations. This is the {@code int}
  * primitive specialization of {@link Stream}.
  */
-@SuppressWarnings("WeakerAccess")
 public final class IntStream implements Closeable {
 
     /**

stream/src/main/java/com/annimon/stream/LongStream.java

@@ -19,7 +19,6 @@
  * @since 1.1.4
  * @see Stream
  */
-@SuppressWarnings("WeakerAccess")
 public final class LongStream implements Closeable {
 
     /**

stream/src/main/java/com/annimon/stream/Objects.java

@@ -12,6 +12,7 @@
 /**
  * Common operations with Object.
  */
+@SuppressWarnings("WeakerAccess")
 public final class Objects {
 
     private Objects() { }

stream/src/main/java/com/annimon/stream/Optional.java

@@ -19,6 +19,7 @@
  *
  * @param <T> the type of the inner value
  */
+@SuppressWarnings("WeakerAccess")
 public class Optional<T> {
 
     private static final Optional<?> EMPTY = new Optional();

stream/src/main/java/com/annimon/stream/OptionalBoolean.java

@@ -16,7 +16,6 @@
  * @since 1.1.8
  * @see Optional
  */
-@SuppressWarnings("WeakerAccess")
 public final class OptionalBoolean {
 
     private static final OptionalBoolean EMPTY = new OptionalBoolean();

stream/src/main/java/com/annimon/stream/OptionalDouble.java

@@ -19,7 +19,6 @@
  * @since 1.1.4
  * @see Optional
  */
-@SuppressWarnings("WeakerAccess")
 public final class OptionalDouble {
 
     private static final OptionalDouble EMPTY = new OptionalDouble();

stream/src/main/java/com/annimon/stream/OptionalInt.java

@@ -18,7 +18,6 @@
  * If a value is present, {@code isPresent()} will return {@code true} and
  * {@code getAsInt()} will return the value.
  */
-@SuppressWarnings("WeakerAccess")
 public final class OptionalInt {
     /**
      * Common instance for {@code empty()}.

stream/src/main/java/com/annimon/stream/OptionalLong.java

@@ -18,7 +18,6 @@
  * @since 1.1.4
  * @see Optional
  */
-@SuppressWarnings("WeakerAccess")
 public final class OptionalLong {
 
     private static final OptionalLong EMPTY = new OptionalLong();

stream/src/main/java/com/annimon/stream/Stream.java

@@ -23,6 +23,7 @@
  *
  * @param <T> the type of the stream elements
  */
+@SuppressWarnings("RedundantTypeArguments")
 public class Stream<T> implements Closeable {
 
     /**

stream/src/main/java/com/annimon/stream/internal/Compat.java

@@ -10,6 +10,7 @@
 /**
  * Compatibility methods for Android API < 9.
  */
+@SuppressWarnings("WeakerAccess")
 public final class Compat {
 
     static final long MAX_ARRAY_SIZE = Integer.MAX_VALUE - 8;
@@ -25,7 +26,6 @@ public static <T> Queue<T> queue() {
         }
     }
 
-    @SafeVarargs
     public static <E> E[] newArray(int length, E... array) {
         try {
             return Arrays.copyOf(array, length);

stream/src/main/java/com/annimon/stream/internal/SpinedBuffer.java

@@ -7,6 +7,7 @@
 import java.util.Arrays;
 import java.util.Iterator;
 
+@SuppressWarnings({"WeakerAccess", "SameParameterValue"})
 final class SpinedBuffer {
 
     /**
@@ -27,7 +28,7 @@ final class SpinedBuffer {
     /**
      * Minimum array size for array-of-chunks.
      */
-    static final int MIN_SPINE_SIZE = 8;
+    private static final int MIN_SPINE_SIZE = 8;
 
     private SpinedBuffer() {
     }

stream/src/main/java/com/annimon/stream/iterator/IndexedIterator.java

@@ -8,6 +8,7 @@
  * @param <T> the type of the iterator elements
  * @since 1.1.6
  */
+@SuppressWarnings("WeakerAccess")
 public class IndexedIterator<T> implements Iterator<T> {
 
     private final Iterator<? extends T> iterator;

stream/src/main/java/com/annimon/stream/iterator/LsaExtIterator.java

@@ -23,6 +23,7 @@ public boolean hasNext() {
         return hasNext;
     }
 
+    @SuppressWarnings("ResultOfMethodCallIgnored")
     @Override
     public T next() {
         if (!isInit) {

stream/src/main/java/com/annimon/stream/iterator/PrimitiveExtIterator.java

@@ -24,6 +24,7 @@ public boolean hasNext() {
             return hasNext;
         }
 
+        @SuppressWarnings("ResultOfMethodCallIgnored")
         @Override
         public int nextInt() {
             if (!isInit) {