HBASE-12485 Maintain SeqId monotonically increasing
HBASE-12674 Add permission check to getNamespaceDescriptor()
HBASE-12568 Adopt Semantic Versioning and document it in the book
HBASE-11153 Document that http webUI's should redirect to https when enabled
HBASE-12373 Provide a command to list visibility labels (Jerry He)
Fix the ASCII art

Signed-off-by: stack <stack@apache.org>