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Ics.py changelog

Major releases are named in honor of influential women who shaped modern computer technology

0.8 (in dev) - Grace Hopper

Grace Hopper was mathematician and rear admiral who was a pioneer in developing computer technology, helping to devise UNIVAC I, the first commercial electronic computer and FLOW-MATIC on which COBOL was based

This is a major release in the life of ics.py as it fixes a lot of long standing (design) issues with timespans, removes Arrow and introduces attrs. Thank you @N-Coder for the huge work you put in this!

In progress:
  • Remove Arrow
  • Fix all-day issues
  • Add attrs
  • Fix timezone issues
  • Fix SEQUENCE bug
  • Introduce Timespan
  • arrow was removed, use built-in datetime and timedelta instead
  • events, todos, attendees and alarms are now all lists instead of sets, as their contained types are not actually hashable and in order to keep the order they had in the file. Use append instead of add to insert new entries.
  • attendees and organizer now must be instances of the respective classes, plain strings with the e-mail are no longer allowed
  • extra can now only contain nested `Container`s and `ContentLine`s, no plain strings
  • some attributes now have further validators that restrict which values they can be set to, which might further change once we have configurable levels of strictness
  • dtstamp and created have been separated, dtstamp is the only one set automatically (hopefully more conforming with the RFC)
  • Event.join is hard to do right and now gone if nobody needs it (and is able to formulate a clear behaviour faced with floating events vs events in different timezones and also all-day events)
  • method has_end() -> property has_explicit_end as any Event with a begin time has an end
  • renamed Event.name to Event.summary
  • ics.grammar.parse has been shortened to ics.grammar.
  • The inner Meta classes were replaced by a single NAME class attribute
  • The Component conversion methods are now called from_container and to_container.
  • For ContentLine/Container there's now a serialize method to convert them to ics strings.
  • new to string / serialization behaviour:
    • __repr__ returns a full, valid python representation, is fast and can't throw exceptions
    • __str__ returns a short human-readable description, is fast and can't throw exceptions
    • serialize returns the full ics representation, is still pretty fast and usually shouldn't throw exceptions (except for when you pass in data that can't be serialized, this potentially includes old Arrow instances)
  • new Calendar constructor / parse methods
  • remove the Calendar._timezones attribute
  • added support for parsing and serializing Timezones

0.7 - Katherine Johnson

Katherine Johnson was a mathematician whose calculations of orbital mechanics at NASA were critical to the success of the firsts crewed spaceflights. She helped pioneer the use of computers to perform these tasks at NASA.

Special thanks to @N-Coder for making 0.7 happen!

Breaking changes:
  • Remove useless day argument from Timeline.today()
  • Attendee and Organizer attributes are now classes and can not be set to str.
Minor changes:
  • Add support for Python 3.8
  • Ensure VERSION is the first line of a VCALENDAR and PRODID is second.
Bug fixes:
  • Fix regression in the support of emojis (and other unicode chars) while parsing. (Thanks @Azhrei)
  • Fix a bug preventing an EmailAlarm to be instantiated
  • Fix multiple bugs in Organizer and Attendees properties. (See #207, #209, #217, #218)

0.6 - Sophie Wilson

Sophie Wilson is an computer scientist who was instrumental in designing the BBC Micro, including the BBC BASIC language, and the ARM instruction set

Major changes:
  • Drop support for Python 3.5. Python 3.7 is now distributed in both Ubuntu LTS and Debian stable, the PSF is providing only security fixes for 3.5. It's time to move on !
  • Add 竜 TatSu as a dependency. This enables us to have a real PEG parser and not a combination of regexes and string splitting.
  • The previously private ._unused is now renamed to public .extra and becomes documented.
  • The Alarms have been deeply refactored (see the docs for more detail) and many bugs have been fixed.
Minor changes:
  • Add mypy
  • Add GEO (thanks @johnnoone !)
  • Calendar.parse_multiple() now accepts streams of multiple calendars.
  • Calendar() does not accept iterables to be parsed anymore (only a single string)
  • Add support for classification (#177, thanks @PascalBru !)
  • Support arrow up to <0.15
  • Cleanup the logic for component parsers/serializers: they are now in their own files and are registered via the Meta class
Bug fixes:
  • Events no longer have the TRANSP property by default (Fixes #190)
  • Fix parsing of quoted values as well as escaped semi-columns (#185 and #193)

0.5 - Adele Goldberg

Adele Goldberg is a computer scientist who participated in developing Smalltalk-80 and various concepts related to object-oriented programming while working as a researcher at Xerox.

This is the first version to be Python 3 only.

This release happens a bit more than a year after the previous one and was made to distribute latest changes to everyone and remove the confusion between master and PyPi.

Please note that it may contain (lot of) bugs and not be fully polished. This is still alpha quality software!

Highlights and breaking changes:
  • Drop support for Python 2, support Python from 3.5 to 3.8
  • Upgrade arrow to 0.11 and fix internal call to arrow to specify the string format (thanks @muffl0n, @e-c-d and @chauffer)
Additions:
  • LAST-MODIFIED attribute support (thanks @Timic3)
  • Support for Organizers to Events (thanks @danieltellez and kayluhb)
  • Support for Attendees to Events (thanks @danieltellez and kayluhb)
  • Support for Event and Todo status (thanks @johnnoone)
Bug fixes:
  • Fix all-day events lasting multiple days by using a DTEND with a date and not a datetime (thanks @raspbeguy)
  • Fix off by one error on the DTEND on all day events (issues #92 and #150)
  • Fix SEQUENCE in VTIMEZONE error
  • Fixed NONE type support for Alarms (thanks @zagnut007)
Known issues:
  • There are known problems with all-day events. This GitHub issue summarizes them well: ics-py#155. You can expect them to be fixed in 0.6 but not before.
Misc:
  • Improve TRIGGER DURATION parsing logic (thanks @jessejoe)
  • Event equality now checks all fields (except uid)
  • Alarms in Event and Todo are now consistently lists and not a mix between set() and list()

Thanks also to @t00n, @aureooms, @chauffer, @seants, @davidjb, @xaratustrah, @Philiptpp

0.4 - Elizabeth J. Feinler

Elizabeth J. Feinler is an information scientist. She led the NIC for the ARPANET as it evolved into the Defense Data Network (DDN) and then the Internet.

Last version to support Python 2.7 and 3.3.

This version is by far the one with the most contributors, thank you !

Highlights:
  • Todo/VTODO support (thanks @tgamauf)
  • Add event arithmetics (thanks @guyzmo)
  • Support for alarms/VALARM (thanks @rkeilty)
  • Support for categories (thanks @perette)
Misc:
  • Make the parser work with tabbed whitespace (thanks @mrmadcow)
  • Better error messages (thanks @guyzmo)
  • Support input with missing VERSION (thanks @prashnts)
  • Support for Time Transparency/TRANSP (thanks @GMLudo)
  • All day events not omit the timezone (thanks @Trii)
  • Multi-day events fixes (thanks @ConnyOnny)
  • Fix TZID drop when VTIMEZONE is empty (thanks @ConnyOnny)
  • Better test coverage (thanks @aureooms)
Breaking Changes:
  • Removed EventList class

Thank you also to @davidjb, @etnarek, @jammon

0.3.1

  • Pin arrow to 0.4.2

0.3

  • Events in an EventList() are now always sorted
  • Freeze the version of Arrow (they made backwards-incompatible changes)
  • Add a lot of tests
  • Lots of small bug fixes

0.1.3

  • FIX : broken install. Again.

0.1.2

  • FIX : broken install

0.1.1

  • FIX : wrong super() and add output documentation

0.1

  • First version