* Refs #99 -- Fix stripe support for zero-decimal currencies
* Add new money formatting method
* Force decimal places in many places
* Locale-aware currency rendering
* Fix currencies in more places
* More currency fixes
* check for payment method instead of order total
* incorporate payment fee diff in totaldiff at oder change
* use fee from model and the correct order total
* add error handling
* do not change paid orders
* OrderChangedManager can only be committed once
* remove prints of stripe secrets
* add tests
* an OrderChangeManager must not be committed multiple times
* A pending free order stays pending after being changed
* comments on paid_to_free logic
* [WIP] Implement automatic spell-check for docs
fixes#663
The only thing unclear to me so far is how the output of `make spelling`
should be checked - is there a possibility to check for a file (i.e.
`_build/spelling/output.txt`) to be empty, and report a failed build
otherwise?
* fix typo in requirements.txt
* add enchant library
* travis should report errors, order spelling wordlist
* change travis.yml to easier troubleshoot build issues
* fixed more typos, added more words
* add more words, fix more typos
* added more words
* added more words
* revert changes to .travis.yml
* Data model and migration
* Some backwards compatibility
* CRUD for checkin lists
* Show and perform checkins
* Correct numbers in table and dashboard widget
* event creation and cloning
* Allow to link specific exports and pass options per query
* Play with the CSV export
* PDF export
* Collapse exports by default
* Improve PDF exporter
* Addon stuff
* Subevent stuff, pretixdroid tests
* pretixdroid tests
* Add CRUD API
* Test compatibility
* Fix test
* DB-independent sorting behavior
* Add CRUD and coyp tests
* Re-enable pretixdroid plugin
* pretixdroid config
* Tests & fixes
