EnumTypeCaster by default

[sunnyphp]

Q	A
Is bugfix?	❌
New feature?	❌
Breaks BC?	✔️

Hello.

I suggest using EnumTypeCaster by default, since enumerations are, in my opinion, heavily used by developers. I also provided an example in readme.md for clarity.

Thanks.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (067f551) to head (604d33d).

Additional details and impacted files

@@             Coverage Diff             @@
##              master      #107   +/-   ##
===========================================
  Coverage     100.00%   100.00%           
  Complexity       332       332           
===========================================
  Files             43        43           
  Lines            827       828    +1     
===========================================
+ Hits             827       828    +1     

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[vjik]

You are right, but I think this break backward compatibility. I suggest merge it before major release.

@sunnyphp Can you extract the doc fixes into a separate PR?

[sunnyphp]

You are right, but I think this break backward compatibility. I suggest merge it before major release.

Fully agree.

@sunnyphp Can you extract the doc fixes into a separate PR?

Done. #108