removing versioneer (pytrip#486)

* removing versioneer

* missing import added

* PEP8 fix

* cleaning

* testing distutils import

* newer packages for appveyor

* user installation

Feature/482 fix release making (pytrip#483)

* bringing back packaging command
* enabling deploy
minor cleaning

Feature/482 fix release making (pytrip#483)

* bringing back packaging command
* enabling deploy
minor cleaning

util.py: basenames returned also for paths (pytrip#471)

* Fix for pytrip#456

* be more clear on what is the basename.

* cosmetics

set basename upon dicom CT and RTSS import (pytrip#468)

* set basename upon dicom CT and RTSS import

* replace any whitespace

Multi-contour per VOI (pytrip#466)

* Add multiple contour reading.

* Cleanup code, proper checking for CLOSED_PLANAR tag.

* API change

* fix pytest timeout

* Refactoring and more documentation.

* Deprecation fixes. get_voi_name and sagital

* clean whitepsace

* Adjust contour_closed in case of single points in DICOM contour.

* Fix api adjustments, more documentation.

* as requested.

Possible fix for pytrip#460. (pytrip#463)

Fix volhist issues (pytrip#453)

* Fix pytrip#452

* Fix pytrip#451

* A few more bug fixes, add type to LET cube.

* amend review

* Fix error when no mask is available.

* when will this end..

corrected fluence normalization (pytrip#450)

* corrected fluence normalization

* fluence replaced with particle number

* more renaming

spc2pdf implementation (pytrip#442)

* spc2pdf initial implementation

* fixed matplotlib issue on travis,
added optional logscale on plots and possibility to select colormap

* fixed plotting SPC with non-uniform depth steps

* python3.2 exception added

* test adjusted to python3.2 fix

* adapt tests

* plotting spectra at selected depths

* silencing flake8 complains

* pip 10 fixes on appveyor

* pip fixes