Port clojure.zip

[ruseel]

As part of issue #5, ported zip.clj to cljd/zip.cljc.

I had to use with-meta instead of using semantics of (fn [] ^:a [0]).

(meta ((fn [] ^:a [0])))

;; evaled in clojure
{:a true}

;; evaled in clojuredart 
nil 

And (loc 0) raised Exception: No extension of protocol IFn found for type IteratorSeq<dynamic>.
worked around by changing to (first loc)

all forms in zip.clj's rich comment, executed with same result.

[cgrand]

Nice! @dupuchba and I are going to fix the issues you encountered first. 🙏

[dupuchba]

Very nice <3 - Going to look at this PR this weekend or Monday !

[dupuchba]

@ruseel we fixed the bug, I'll push it tomorrow after writing some tests

[dupuchba]

@ruseel it's pushed here 9996903

for the (loc 0) bug, can you paste the code that leads to this ?
Seq(s) don't implement IFn so it's normal but depending on how you get this error you should not have an IteratorSeq in the first place

[ruseel]

for the (loc 0) bug, can you paste the code that leads to this ?

sorry. I could not reproduce it.

While I was working on this PR, there was time I missed
to require cljd.zip.replace, cljd.zip.next, cljd.zip.remove.

so I did it again but could not reproduce it

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Using 9996903 And after just "s/clojure.zip/cljd.zip/"
all forms in zip.clj's rich comment, executed with same result.