v0.5

• Most minor issues have been ironed out
• Fixed minor bugs affecting wait logic on startup
• Using InsertRecPtr instead of XLogInsertRecPtr during snapshot creation to prevent xlogflush failures

v0.4

• Using max LSN value captured during txn snapshot
• Fixed corner case when maxlsn = remoteflushlsn and/or remoteflushlsn = 0
• Changed txn visibility so that txns are visible as soon as clog is updated
• Fixed failing pg_walinspect test. Core tests, regression tests and pgtap tests all pass now.