0.9.0

Fixed

• Transfers + Calendar: on collision of two solemnities of exactly the same rank (e.g. collision of the solemnities of Sacred Heart of Jesus and Birth of St. John the Baptist in 2022) the sanctorale one was scheduled both on the original date and on the transferred date and the temporale solemnity was not scheduled at all
• liturgical colour of All Souls (has incorrectly been white since the beginning of the project, changed to violet)

Added

• data: General Roman Calendar in Portuguese + Portuguese locale (by Tomas Monteiro @tmonteiro2344)
• data: all calendars: new memorial of St. Martha, Mary and Lazarus (replacing memorial of St. Martha alone), new optional memorials of St. Gregory of Narek, St. John De Avila and St. Hildegard of Bingen
• SanctoraleWriter.new: new optional keyword argument front_matter
• Calendar.new: new optional keyword argument transfers for supplying custom implementation of the solemnity transfer logic
• Temporale#provides_celebration?
• Sanctorale#provides_celebration?, #by_symbol, #merge
• CLI: calendariumrom id to list celebration symbols included in specified sanctorale data file
• CLI: calendariumrom merge to merge two or more sanctorale data files
• CLI: calendariumrom cmp supports new options --no-rank, --no-colour, --no-symbol for ignoring differences in the specified celebration properties and option --title to check for differences in title (ignored by default)

Changed

• Temporale::Dates methods are defined as instance methods and made available as module methods through extend self (so far they were defined and only available as module methods)
• Temporale::Dates: helper methods weekday_before, weekday_after, octave_of and their derivatives extracted to a new module Temporale::DateHelper (but they are still available on Temporale::Dates, too)
• data: repeated spaces removed from the Latin, Italian and Spanish version of the General Roman Calendar (this does not affect behaviour of calendarium-romanum itself, but may affect some other applications possibly processing the data files directly)
• Transfers#call return value: now it contains not only solemnities transferred (and the destination dates), but also the ones winning the original date, unless they are of the two highest ranks
• Transfer#call: in case of collision of two solemnities of exactly the same rank temporale always wins over sanctorale
• Sanctorale#dup now properly creates for the clone it's own internal data structures independent of the original's ones
• CLI: calendariumrom cmp exits with status 1 if any differences are found
• CLI: calendariumrom cmp prints celebration symbol if available
• runtime dependencies loosenned: we support thor already from version 0.15 and i18n from version 0.7