This plugin is not properly prepared for localization

[ntwb]

Via https://translate.wordpress.org/locale/en-au/default/wp-plugins/slack

Currently only the readme is available for translation

See also:

• https://wordpress.slack.com/archives/C0E7F4RND/p1491762804232387

[4:33]  
Import of slack
_Time: Sun, 09 Apr 2017 18:33:18 +0000, Development Log_
Code for stable (slack/tags/0.6.0/) in process...
This plugin doesn't use `load_plugin_textdomain()`.
Code for stable was processed.
Readme for stable (slack/tags/0.6.0/) in process...
The GlotPress projects were updated.
Result of the POT import: 5 new strings added, 0 updated, 0 fuzzied, and 0 obsoleted.
Readme for stable  was processed.

• https://wordpress.slack.com/archives/C0E7F4RND/p1491762810232749

[4:33]  
Import of slack
_Time: Sun, 09 Apr 2017 18:33:25 +0000, Development Log_
Code for dev (slack/trunk/) in process...
This plugin doesn't use `load_plugin_textdomain()`.
Code for dev was processed.
Readme for dev (slack/trunk/) in process...
The GlotPress projects were updated.
Result of the POT import: 4 new strings added, 0 updated, 0 fuzzied, and 0 obsoleted.
Readme for dev  was processed.

• https://wordpress.slack.com/archives/C0E7F4RND/p1491763103250897

4:38 AM] 
Translation Sync for slack
_Time: Sun, 09 Apr 2017 18:38:23 +0000_
Translation sync from dev-readme to stable-readme in process...
    No translations are available to sync.
Translation sync was successfully processed.

• https://developer.wordpress.org/plugins/internationalization/how-to-internationalize-your-plugin/#loading-text-domain

"After WordPress 4.6 came out, translations now take translate.wordpress.org as priority and so plugins that are translated via translate.wordpress.org do not necessary require load_plugin_textdomain() anymore. If you don’t want to add a load_plugin_textdomain() call to your plugin you have to set the Requires at least: field in your readme.txt to 4.6."

To resolve, either add the call to load_plugin_textdomain() or bump required to 4.6

[gedex]

Thanks for reporting this @ntwb. Will be fixed in 0.6.1.