v2.6

Addresses #14, only showing future events on price set options.
Also confirms PHP 8.0/8.1 compatibility.

Version 2.5

Fixes a bug where add on memberships were not being recorded (#21)

Version 2.4

handle payments completing pay-later contributions

Version 2.3

This makes it so one can configure a price option to sign up for multiple events OR multiple memberships.

Version 2.2

This resolves a bug introduced in Version 2.1 where a database error prevents the creation of new additional signup options.

Version 2.1

Simplifies query code
Adds documentation for MkDocs

Version 2.0

• When a pay-later contribution is completed for the main event, the add-on event registration is also completed. (This does not apply to memberships.) Similarly, canceled pay-later contributions cause the add-on registration to be canceled.
• Front-end users are prevented from selecting price options for add-on events that are full, in the past, or with online registration that has closed. However, simply disabling online registration on an add-on event will not prevent registration with the corresponding price option(s).
• Some minor schema changes involving field length and indexing.

Version 1.3

Addresses a bug in CiviCRM where the newly-created line item is an array in 4.5 and an object in 4.6

Version 1.2

Added entity reference fields for event select
Fixed date display for 4.4 event select

Version 1.1

Polished and ready for first stable release