Do not convert keys to strings in Dash and Trash.

[dblock]

This addresses #151. It's a pretty significant API change, however for anyone who was accessing properties in Dash/Trash with a string key.

Before

require 'hashie'

class Person < Hashie::Dash
  property :name
end

p = Person.new(name: 'dB.')

p.name # => 'dB.'
p[:name] # => 'dB.'
p['name'] # => 'dB.'

# not what I put in
p.inspect # => { 'name' => 'dB.' }
p.to_hash # => { 'name' => 'dB.' }

After

require 'hashie'

class Person < Hashie::Dash
  property :name
end

p = Person.new(name: 'dB.')

p.name # => 'dB.'
p[:name] # => 'dB.'
# p['name'] # => NoMethodError

p.inspect # => { :name => 'dB.' }
p.to_hash # => { :name => 'dB.' }

Backward Compatible Behavior

Use Hashie::Extensions::Dash::IndifferentAccess.

require 'hashie'

class Person < Hashie::Dash
  include Hashie::Extensions::Dash::IndifferentAccess
  property :name
end

p = Person.new(name: 'dB.')

p.name # => 'dB.'
p[:name] # => 'dB.'
p['name'] # => 'dB.'

p.inspect # => { 'name' => 'dB.' }
p.to_hash # => { 'name' => 'dB.' }

[dblock]

I really would like some comments on this one from @mbleigh, @jch, etc.

[dblock]

I am going to merge this. If someone wants a Dash to behave the old way they should be able to add IndifferentAccess.