Ratchet: Change SparseArray from int to char to reduce space

history.txt

router/java/src/net/i2p/router/RouterVersion.java

...er/java/src/net/i2p/router/crypto/ratchet/ArrayUtils.java

...a/src/net/i2p/router/crypto/ratchet/ContainerHelpers.java

.../src/net/i2p/router/crypto/ratchet/GrowingArrayUtils.java

...r/java/src/net/i2p/router/crypto/ratchet/SparseArray.java