v2.7

Civix update for Smarty 3+ compatibility.

Thanks to @kcristiano for the PR.

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