0.8.0

Fixed

• several fixes to the solemnity transfer rules:
  • the algorithm was searching for free days only forwards,
    but liturgical law assumes closest free day, even earlier
  • check that two solemnities are not transferred to the same date,
    overwriting one another
  • the special rule on Annunciation from Normae universales 60
    implemented
• fixed bug in computation of the date of Baptism of the Lord if Epiphany
  is transferred to Sunday
• fixed bug in Sanctorale#update preventing more than one Celebration
  with nil #symbol in a single Sanctorale
• CelebrationFactory was setting Celebration#date (if not specified)
  to false instead of expected nil (thus breaking type promises)
• data: czech-cs.txt: typo fixed in the feast symbol of St. Bartholomew;
  spelling of several feast titles corrected
• data: czech-cs.txt: proof-read against official sources, feasts
  of "BVM, Queen of Angels" and St. Teresa of Calcutta deleted
  (they are not on the calendar of Czech and Moravian dioceses,
  incorrect information was copied from Czech Wikipedia at the time
  of the data file's creation)
• data: all: Dedication of the Lateran Basilica is feast of the Lord
  (had incorrect rank of a normal feast so far)
• data: universal-en.txt: several inaccuracies concerning liturgical
  colour fixed

Added

• liturgical_law/: all documents of liturgical legislation
  containing the liturgical calendar rules (original Latin text)
  in Markdown format, with Ruby code examples proving that
  the rules are implemented correctly;
  the code examples are all executed as part of the gem's test suite
• SanctoraleWriter (contributed by Mike Kasberg @mkasberg)
• PerpetualCalendar.new accepts keyword argument vespers
  (cf. Calendar.new argument of the same name)
• Rank#optional_memorial?, #obligatory_memorial?
• AbstractDate#in_year - more readable alias of #concretize
• Rank#succ - (among other things) allows constructing Range of Ranks
• Calendar#transferred
• Temporale::Extensions::DedicationBeforeAllSaints defining the solemnity
  of Aniversary of Dedication for churches celebrating it on the movable
  date on the last October Sunday
• Temporale::Extensions.all - method listing all Temporale extensions
  defined by the gem
• Temporale#each_day
• Temporale::EasterTable - class handling a simple plaintext format
  for tables of Easter dates
• Celebration.new: new argument sunday
• SanctoraleLoader: proper solemnities/feasts/memorials
  can be specified also by adding suffix p to the rank code
  (instead of rank priority number used so far),
  similarly suffix l can be used to specify proper rank for
  feasts of the Lord
• data: universal-1969-la.txt - historical first version
  of the General Roman Calendar
• module Constants containing all the constants from Colours,
  Seasons and Ranks

Changed

• the gemspec now declares requirement of Ruby >= 2.0
• Calendar.new can be called also without the year argument if Temporale
  is provided (thus calling Calendar.new(temporale, sanctorale)
  instead of Calendar.new(year, sanctorale, temporale))
• Easter Triduum is now dealt with as a separate Season,
  because Normae universales 18-21 clearly set the Triduum apart from
  both Lent and Eastertide
• Temporale::Extensions::ChristEternalPriest specifies celebration
  symbol (so far it was nil)
• Celebration.new supports keyword arguments (as an alternative to
  or even in combination with the positional ones)
• Temporale: business logic guaranteeing that Celebration#sunday?
  is true also for privileged Sundays (Advent, Lent)
• calendariumrom executable: all subcommands dealing with sanctorale
  data files accept special file name - and load sanctorale data
  from stdin in that case
• Enum, Colours, Seasons, Ranks and Data changed from classes
  to modules

Acknowledgements

Improvements not affecting the gem's public interface (and thus not listed
in the changelog) contributed by

• Ihor Voloshyn @Snick555
• Dmitry Zhmurko @zhmurko