• SSH2: backport setPreferredAlgorithms() / getAlgorithmsNegotiated (#1156)
• SSH2 / SFTP: fix issues with ping() (#1402)
• X509: IPs in nameconstraints extension include netmask (#1387)
• X509: fix issue with explicit time tags whose maps expect implicit (#1388)
• BigInteger: fix bug with toBytes() with fixed precision negative numbers
• fix PHP 7.4 deprecations