Quick change to fix #30

[getzdan]

This is a quick fixup which was tested on latest 0.6 and master. Before merging tests on other versions are appropriate.

[coveralls]

Coverage decreased (-0.4%) to 89.316% when pulling 7e6366d on getzdan:patch-1 into 0eb0443 on Jutho:master.

[codecov-io]

Codecov Report

Merging #31 into master will decrease coverage by 0.11%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master      #31      +/-   ##
==========================================
- Coverage   89.68%   89.56%   -0.12%     
==========================================
  Files          17       17              
  Lines         601      604       +3     
==========================================
+ Hits          539      541       +2     
- Misses         62       63       +1

Impacted Files	Coverage Δ
src/auxiliary/meta.jl	100% <100%> (ø)	⬆️
src/indexnotation/indexedobject.jl	84.37% <0%> (-3.13%)	⬇️

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[coveralls]

Coverage decreased (-0.1%) to 89.57% when pulling 3b94862 on getzdan:patch-1 into 0eb0443 on Jutho:master.

[chriselrod]

Can this be merged and a new release tagged?
Now that 0.6.0 is officially released, it would be nice to lose the deprecation warnings.

[Jutho]

Yes I forgot about this. I think this solution is ok.