Updates #28109
Changes to readme.txt

Signed-off-by: Rob La Gatta <rob@tri.be>
Issue #27396 - Venue & Organizer labels are now filterable
Issue #27396 - Updated tickets views to use new Venue/Organizer label template tags
Issue #27396 - Using sprintf per jbrinley's sage advice
Issue #27396
Issue #27396
Issue #27396
Issue #27396 - Expand 'Events' admin sub-menu when adding Venues & Organizers
Issue #27396 - Moving slug overrides to init()
allow filtering of unset organizer name, to be consistent with venues - updates #19481
Issue #27164 - Change tribe_events_the_header_attributes() to use pipe for consistency with 2011, 2012, 2013, and 2014 themes
Issue #26585 - Fixed issue where tribe_eventcategory wasn't getting set in $tribe_bar_args
Add helper to reformat dates (updates #26972)
Track earliest start date/latest end date in calendar (updates #26972)
Add helpers to retrieve earliest start/lateest end dates (updates #26972)
Don't link to days/months that are 'out of bounds' (updates #26972)
Issue #18419 - Add Page template to body class
Merge branch 'develop' of github.com:moderntribe/the-events-calendar into develop
Corrects 3.6 release notes in readme.txt
Updates #28087

Signed-off-by: Leah <leah.koerper@gmail.com>
Adds new Bulgarian translation
Adds new translator credit to readme.txt
Updates #28086

Signed-off-by: Leah <leah.koerper@gmail.com>