check for existing environments. only allow a re-init if it is the same environment.
better handling for list of replicaset nodes that are initializing.
added mlogvis performance improvements to CHANGES.
latest log2code library. small changes in parse_sourcecode.
replaced shebang with #!/usr/bin/env python everywhere, to support non-default python installations.
mentioned shebang change in CHANGES.
bumped version to 1.1.3dev