Getindex logical vector, fixes #44

[phaverty]

add getindex method for Vector{Bool} indices, fixes indexing into RLEVector of strings using vector of bools

[codecov]

Codecov Report

Merging #47 (124938b) into master (e218d67) will increase coverage by 0.02%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master      #47      +/-   ##
==========================================
+ Coverage   92.04%   92.06%   +0.02%     
==========================================
  Files          15       15              
  Lines         729      731       +2     
==========================================
+ Hits          671      673       +2     
  Misses         58       58              

Impacted Files	Coverage Δ
src/indexing.jl	91.46% <100.00%> (+0.10%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update e218d67...124938b. Read the comment docs.