Bump launchy from 2.4.3 to 2.5.0

Bumps launchy from 2.4.3 to 2.5.0.

Commits

• 8b74fee Release 2.5.0
• 09aa013 updating gem metadata
• 23e7165 remove no longer valid history item from current release
• 58270ee update copyright date
• 294127c updating addressable to latest dependency
• 44453cc prepare for release
• 88eb402 Merge pull request #132 from copiousfreetime/ensure-2.4-and-greater-support
• ac4dbc2 Merge in changes from #105
• 392e141 removing jruby 9.1.17.0 from travis
• 94dfcef update travis jruby version
• Additional commits viewable in compare view