Avrohugger is outdated

[tashoyan]

The version of Avrohugger used by this plugin is quite outdated: 1.0.0-RC24. Moreover, it is not a stable release version.

As a result, the plugin suffers from Avrohugger issues, that have been fixed in later versions (for example, incorrect handling of reserved words: julianpeeters/sbt-avrohugger#86)

Currently Avrohugger version 1.7.0 is available.

[ldeck]

This is a duplicate of #81, but needed nonetheless

[ldeck]

@makubi — any chance of a more recent release making it out the door soon?