SimpleTag::units accepts empty string as valid unit
new method to get offset and count NDSize objects for simpleTags
documentation of positionToIndex
Test for util::getOffsetAndCount
Merge branch 'master' of https://github.com/jgrewe/pandora-1 into position_extent
Add kdevelop files to .gitignore
Some additions to Contributing.md
More additions to Contributing.md
s/Pandora/NIX/
Contribution.md: changes based on team member comments
Contribution.md: fix some small errors
Add pkg-config file for developer joy
Merge pull request #195 from stoewer/master

Some additions to Contributing.md
Merge pull request #206 from gicmo/pkgconfig

Add pkg-config file for developer joy. Cool!
bugfix in checkDimensions. Could not handle more than 1D, bad
implementation
Value: + {get,set}(none_t) for setting it to DataType::Nothing

The getter is a bit useless but will be used to streamline
swap_helper.
[test] Value: set for set(none_t)
Value::swap: use swap_helper also for DataType::Nothing
Value::assign_variant_from: use set(none) for DT::Nothing
Value: fix typos (no logic change)