ENH: enable sweep and moment specific reading via loaddata switch

FIX: fix iris_tests

ENH: get_sweep_headers without loading whole dataset

ENH: add arg to testrunner.py to select tests by substring (#175)

ENH: IRIS reader (#170)

add sigmet iris reader using numpy.memmap (RAW-format only)

Merge pull request #159 from kmuehlbauer/reorganize-modules

Reorganize modules

MIN: expose two functions

WIP: flesh out `wradlib.georef` submodules, clean-up zonalstats, fix tests/notebooks,

WIP: flesh out `wradlib.io` submodules, remove deprecated functions, fix tests/notebooks

MIN: create submodules `io` and `georef`

(cherry picked from commit 82c602b)

Merge pull request #163 from kmuehlbauer/codecov-flags

ENH: introduce flags to code coverage

FIX: codecov needs xml-files

MIN: make path absolute

ENH: introduce flags to code coverage

Merge pull request #162 from kmuehlbauer/fix-latex

FIX: latex equations not displayed

FIX: latex need to be within two "$" in any case to be properly processed with nbsphinx

MAINT: Post Release Maintenance

- bump version number
- set ISRELEASED to False

REL: 0.10.1

Release 0.10.0

FIX: Fix numpy 1.13 related BUGS (#157)

* WIP: add test comment

* WIP: fix notebooks, (matplotlib plotting boolean arrays, colorbar issue)
(cherry picked from commit 9d367b7)

* WIP: fix bug in `atten` (boolean indexing issue with numpy)
(cherry picked from commit a3c964d)...

FIX: fix `zonalstats.numpy_to_ogr` to handle nested ndarray-cases (#156)