fix: drop incorrect namespace handling

[muktihari]

• Drop incorrect namespace handling; Handling it correctly requires a lot of bookkeeping.
• Rename Name.Space to Name.Prefix since we just parsing the prefix not handling the namespace properly.
• Mark this library as non-namespace parser in README.md.
• Change IsEndElement() method as IsEndElement (bool) field instead and xml's Name for EndElement will no longer has prefix "/":
  • "/gpx" -> "gpx".

Discussion: https://www.reddit.com/r/golang/comments/1drdji3/xml_tokenizer_thats_4x_faster_than_stdlibs_xml/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (71c4417) to head (46e23b4).

Additional details and impacted files

@@            Coverage Diff            @@
##            master       #15   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            2         2           
  Lines          266       266           
=========================================
  Hits           266       266           

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[dolmen]

Please make more granular changes: this PR contains 2 major changes which seems unrelated to me: change of IsEndElement doesn't seem related to namespace handling, at least from an external point of view.

[muktihari]

Please make more granular changes: this PR contains 2 major changes which seems unrelated to me: change of IsEndElement doesn't seem related to namespace handling, at least from an external point of view.

Will do on next PR since this repo is now gain more traction and I don't want to break someone else code as well. Thanks for pointing this out.