Release 0.5.2

Changes in v0.5.2

Feature changes

• (data): new icon
• (main_win): notify the user if a plugin isn't available or has crashed

Bugfixes

• (data): add drop shadow to icon
• (data): less grey, more white in icon
• (edit_view): fix line numbers upon deleting lines
• (i18n): update translations
• (linecache): don't assume we always have at least one line in the linecache
• (i18n): update translations