use numpy functions in Lx_norm()
downsample(_to) demean default false.
simplified misfit test
fixed bug in do_downsample.
removed freqlimits in misfit setup.
changed input order of lx_norm call in misfit
raise no data only, if domain='time_domain'
added progressbar to fomosto check
find misfit from envelope or absolute
Extended misfit testing
k in PoleZeroResponse can be complex
misfit: yield Nones if no overlapping data
seismosizer: operational RingfaultSource, MTSource
fomosto: implemented server and download methods