Release 0.1.1

• traceroute/reply: Fix #28: Err(): return empty string if Err is not a string

Release 0.1.0

First tagged release of RIPE Atlas Go bindings.

Changes since 2017:

• example/streamer: Fix parameter checks
• stream: Close #22: Protect channel with a mutex to prevent sending on and/or closing of a closed channel, and deadlocks
• Remove Travis CI
• measurement/traceroute/reply: Version 4610 adds "Unrecognized error codes are represented as integers" for Err, add support by converting error codes back to string (ref #25)
• Add Go mod files
• Fix a bit of code formatting
• measurement/traceroute/reply: Fix parsing of numeric Err
• Relicensed to MIT
• Add funding link
• Add build action
• Add go.mod to each example with replace to use local checked out code