Allow AbstractStrings

[oxinabox]

I wanted to use a Crayon on a Regex capture. But it failed as those are SubStrings.

This is one way to fix it, by converting the inputs The other would be to change the Struct to allow Union{CrayonWrapper, AbstractStrings} which has problems of its own.

[KristofferC]

Error During Test at /home/travis/build/KristofferC/Crayons.jl/test/runtests.jl:135
  Test threw exception MethodError(convert, (Union{String, Crayons.CrayonWrapper}, String), 0x0000000000006afc)
  Expression: string((Crayon())("hello")) == "hello"
  MethodError: Cannot `convert` an object of type Type{String} to an object of type Union{String, Crayons.CrayonWrapper}
  Closest candidates are:
    convert(::Type{T}, !Matched::T) where T at essentials.jl:123

[oxinabox]

Well that was dumb of me. Good thing I also wrote a test to prove how good at stopping mid-sentence I am.

[codecov-io]

Codecov Report

Merging #22 into master will increase coverage by 0.04%. The diff coverage is 100%.

@@            Coverage Diff             @@
##           master      #22      +/-   ##
==========================================
+ Coverage   94.64%   94.69%   +0.04%     
==========================================
  Files           6        6              
  Lines         224      226       +2     
==========================================
+ Hits          212      214       +2     
  Misses         12       12

Impacted Files	Coverage Δ
src/crayon_wrapper.jl	100% <100%> (ø)	:arrow_up:

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[oxinabox]

I thought far too hard about String vs string

string(xs...)

Create a string from any values using the print function.

String(s::AbstractString)

Convert a string to a contiguous byte array representation encoded as UTF-8 bytes. This representation is often appropriate for passing strings to C.

[KristofferC]

Yeah, sorry, I deleted my comment straight away because I realized it should be string:)

[oxinabox]

Ah that would be why github went weird on me Cool, thanks

[KristofferC]

String I mean!