v1.1.4

NLopt v1.1.4

Diff since v1.1.3

Merged pull requests:

• Update README with a worked example of vector constraints (#257) (@odow)
• Fix loading on nightly (#258) (@yuyichao)
• Prep for v1.1.4 (#259) (@odow)

Closed issues:

• Vector-valued inequality constraints not working as expected (#256)