Move random-string fn to proton.string

[totakke]

I moved proton.core/random-string to proton.string/rand-string with character-type options.

(require '[proton.string :as pstring])

(pstring/rand-string 8)
;;=> "bonYIfi9"

(pstring/rand-string 8 :number :lower-case-letter)
;;=> "iw5tx9bk"

I think random-string fn should be located in proton.string, and rand-string is a bit better name because it is similar to rand-int.

I marked proton.core/random-string as deprecated. proton.string/rand-string maintains full compatibility with proton.core/random-string.

Besides, I fixed a bug of ascii codes of proton.core/random-string.

[codecov]

Codecov Report

Merging #11 into master will increase coverage by 0.27%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master      #11      +/-   ##
==========================================
+ Coverage   94.05%   94.32%   +0.27%     
==========================================
  Files           5        5              
  Lines         185      194       +9     
  Branches        2        2              
==========================================
+ Hits          174      183       +9     
  Misses          9        9              
  Partials        2        2

Impacted Files	Coverage Δ
src/cljc/proton/core.cljc	95.18% <100%> (ø)	⬆️
src/cljc/proton/string.cljc	100% <100%> (ø)	⬆️

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[iku000888]

How about rand-str? Just my 2 cents as int is an abbreviation so it sounded more consistent...

[totakke]

Exactly. I'll fix it.

[federkasten]

LGTM 🙆‍♂️

[federkasten]

Merged. Thanks for your great contribution!