Fix #509 - drop old CHANGELOG.

Please see git commit history for Changelog.

CHANGELOG.md

@@ -1,39 +0,0 @@
-### [Unreleased]
-- New Feature: Allow automatic marking using site logs.
-- New Feature: Warn users when attendance drops below threshold.
-- Improvement: Allow default view for teachers to be set at admin level.
-- Improvement: All courses user report now displays as table.
-- Bug fix: Restored attendances do not create calendar events correctly.
-
-### Date:		2017-May-23
-### Release:	2017052301
-
-- New Feature: New site Level/course category report with average course attendance.
-- New Feature: Allow unmarked students to be automatically marked when session closes.
-
----
-
-### Date:		2017-May-11
-### Release:	2017051104
-
-- New Feature: Allow subnet mask to be set at the attendance session level.
-- New Feature: Allow certain statuses to be hidden from students when self-marking attendance.
-- New Feature: Allow student password to be viewed on session list page.
-- Improvement: Improve usablity by grouping settings on session add form.
-- Bug fix - fix issue with displaying dates when site hosted on Windows server.
-- Bug fix - improve compliance with Moodle coding guidelines.
-
----
-
-### Date:		2017-Apr-21
-### Release:	2017042100
-
-- Feature: Allow a random self-marking password to be used when creating session.
-- Improvement: #63 use core useridentity setting when showing list of users.
-- Improvement: #258 Add link to attendance on student overview report.
-- Improvement: allow student self-marking to be restricted to the session time.
-- Improvement: allow admin to set default values when teachers creating new sessions.
-- Bug fix - improve compliance with Moodle coding guidelines - phpdocs etc.
-
----
-