Drop Julia 0.5

[codecov-io]

Codecov Report

Merging #9 into master will decrease coverage by 0.5%. The diff coverage is n/a.

@@            Coverage Diff             @@
##           master       #9      +/-   ##
==========================================
- Coverage   81.38%   80.87%   -0.51%     
==========================================
  Files          32       32              
  Lines        2186     2186              
==========================================
- Hits         1779     1768      -11     
- Misses        407      418      +11

Impacted Files	Coverage Δ
src/bed/reader.jl	22.36% <ø> (ø)	:arrow_up:
src/bbi/header.jl	100% <ø> (ø)	:arrow_up:
src/bigwig/reader.jl	94.28% <ø> (ø)	:arrow_up:
src/indexes/bgzfindex.jl	95.45% <ø> (-1.52%)	:arrow_down:
src/indexes/tabix.jl	59.18% <ø> (ø)	:arrow_up:
src/gff3/reader.jl	50% <ø> (ø)	:arrow_up:
src/strand.jl	92.68% <ø> (ø)	:arrow_up:
src/bigbed/reader.jl	41.37% <ø> (ø)	:arrow_up:
src/bbi/summary.jl	100% <ø> (ø)	:arrow_up:
src/intervalcollection.jl	85.92% <ø> (ø)	:arrow_up:
... and 27 more

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[bicycle1885]

Close #8.