3.0.3

• X509: passing DateTime objects to setEndDate produced errors (#1578)
• X509: always parse the first cert of a bundle (#1568)
• X509: streamline the management of custom extensions (#1573)
• EC: fix case sensitivity errors when using Symfony autoloader (#1570)
• RSA: improve identification of public / private PKCS1 / PKCS8 keys (#1579)
• RSA: add support for PSS keys that don't have parameters present (#1583)
• RSA: tweaks to how the salt length works
• RSA: throw exceptions instead of returning false
• SSH2: behave like putty with broken publickey auth (#1572)