v1.2.6

ZMQ v1.2.6

Diff since v1.2.5

Merged pull requests:

• Add Julia 1.3 to the CI (#238) (@JamesWrigley)
• Add a changelog (#239) (@JamesWrigley)
• Implement lib_version() (#240) (@JamesWrigley)
• Close the default Context in the precompilation workload (#242) (@JamesWrigley)

Closed issues:

• Failure when creating sysimage with ZMQ >= 1.2.3 (#241)