[evol] reorganize TMail extra methods
[fix] check for MIME boundaries better
[RELEASE] 0.2.3
[RELEASE] 0.2.2
[fix] don't crash is user has no language preference
[RELEASE] 0.2.1
[fix] workaround a nasty TMail behavior: don't regenerate a new boundary when one already exist to avoid breaking GPG signatures
[fix] corrected crash due to exceptions returning non-tm
[fix] don't truncate log file at startup
[fix] don't crash if @config.i18n.restricted_language_set is not set
[licence] updated copyright years and added missing headers
[RELEASE] 0.2.0
[cleanup] moved base require files in 'lib/cyborghood/base'