format.py: included lat/lon format deg:min

Signed-off-by: LK <LK@uni>
BIRRP: fixed problems with naming conventions - script has prolems with long BIRRP runs

Signed-off-by: LK <LK@uni>
PT.py corrected phimin/max angles - birrp.py: external function call fails for large data sets...trying different setups, e.g. os.system()

Signed-off-by: LK <LK@uni>
birrp.py : introduced garbage collection (modile gc) - works fo large files now. Started Correcting error handling from exception to straight exit for scripts

Signed-off-by: LK <LK@uni>
birr.py: included possibility for instrument correction after BIRRP processing by function convert2edi_incl_instrument_correction()

Signed-off-by: LK <LK@uni>
edi.py: corrected writefile (missing split in writing HMEAS section)

Signed-off-by: LK <LK@uni>
geometry.py: sorted strike angles

Signed-off-by: LK <LK@uni>
edi.py removed ambiguous frequency attributes - changed long to lon attribute

Signed-off-by: LK <LK@uni>
pt.py & z.py - removed ambiguous frequency attributes - all named freq now

Signed-off-by: LK <LK@uni>
pt.py: renamed set_z into set_z_object for clarification

Signed-off-by: LK <LK@uni>
edi.py : Tipper attribute is initialised - its attributes are NONE, if tipper is not present

Signed-off-by: LK <LK@uni>
edi.py : INFO changed into non-mandatory section

Signed-off-by: LK <LK@uni>
utils: removed latlongutmconversion.py (contained in conversions.py ) and combineedis.py (contained in EDI)

Signed-off-by: LK <LK@uni>
processing: added io, trace, pile...for later handling of time series files...to be adepted

Signed-off-by: LK <LK@uni>
merged z, edi and pt have not tested consistency yet.
All classes have attributes freq, tested for consistency, Improved documentation
Changed rotation_angle to be consistent and tested in rotate, also set edi.Z.freq on setting edi.z to make sure Z.freq is filled
core.z: Tipper frequencies given as None, if not set (instead of array(None)

Signed-off-by: LK <LK@uni>
core.edi.py - corrected behaviour of Ediobject, if no data are read in - checking for non-existing values and returning None instead of errors.

Signed-off-by: LK <LK@uni>
added occamtools, winglinktools, wstools, soon they will be in the correct file format, just wanted to put them in master for the time being.