SFTP: Replace incorrect comment about filesize. There is no 4 GiB limit.
Restore compatibility with PHP 5.6.1 by using explicit array indexes.

This seems to be caused by the resolution of PHP Ticket 67985.
Merge pull request #493 from bantu/fix-491

Restore compatibility with PHP 5.6.1 by using explicit array index.

* bantu/fix-491:
  Restore compatibility with PHP 5.6.1 by using explicit array indexes.
SFTP: Add truncate() to size() test for files larger than 4 GiB.
Merge pull request #492 from bantu/sftp-large-file-comment

SFTP: Replace incorrect comment about filesize. There is no 4 GiB limit.

* bantu/sftp-large-file-comment:
  SFTP: Replace incorrect comment about filesize. There is no 4 GiB limit.
SFTP: Use hexdec() and bin2hex() for filesize calculation.
Merge pull request #490 from bantu/sftp-large-files

SFTP: Add truncate() to size() test for files larger than 4 GiB.

* bantu/sftp-large-files:
  SFTP: Add truncate() to size() test for files larger than 4 GiB.
Merge pull request #494 from bantu/sftp-filesize-hexdec

SFTP: Use hexdec() and bin2hex() for filesize calculation.

* bantu/sftp-filesize-hexdec:
  SFTP: Use hexdec() and bin2hex() for filesize calculation.
SSH2: fix issues with RSA key verification

Sometimes SSH servers will null pad their RSA keys. this null padding
broke Net/SSH2.php's RSA implementation (Crypt/RSA.php's implementation
works just fine). Also, the -3 was counting the initial "\0" of $h
twice so adjust it to -2.
Merge pull request #500 from terrafrost/ssh-rsa-fix

SSH2: fix issues with RSA key verification

* terrafrost/ssh-rsa-fix:
  SSH2: fix issues with RSA key verification
add CHANGELOG.md
update download version in README.me
Merge branch 'master' of https://github.com/phpseclib/phpseclib
SSH2: clarify exec() docblock comment
Merge pull request #503 from terrafrost/bug501

SSH2: clarify exec() docblock comment

* terrafrost/bug501:
  SSH2: clarify exec() docblock comment
Merge branch 'master' of https://github.com/phpseclib/phpseclib into openssl-support