Bump version number to 0.2.1
Merge branch 'base'

Conflicts:
	configure.in
Fixed bug in reading limits when sigma is zero.
Changes to verbose/ultraverbose output.

If ultraverbose is set, verbose messages are set off by lines of ****
to make them stand out as more important than the likelihood information.
Merge branch 'base'
Added << method for affine Ensemble.
Merge branch 'base'
Handle new verbosity structure, output of affineEnsemble information.