Coercing collection members doesn't raise errors, even in strict mode

[ajvondrak]

Using virtus-1.0.2:

[1] pry(main)> require 'virtus'
=> true
[2] pry(main)> class Model
[2] pry(main)*   include Virtus.model(strict: true)
[2] pry(main)*   attribute :boolean, Boolean
[2] pry(main)*   attribute :booleans, Array[Boolean]
[2] pry(main)* end  
=> Model
[3] pry(main)> Model.new(boolean: 0, booleans: [0, 1, 'yes', 'no', 'hi', 'bye', nil])
=> #<Model:0x007fdd2cbd4438
 @boolean=false,
 @booleans=[false, true, true, false, "hi", "bye", nil]>
[4] pry(main)> Model.new(boolean: 'hi', booleans: [0, 1, 'yes', 'no', 'hi', 'bye', nil])
Virtus::CoercionError: Failed to coerce "hi" into BasicObject
from ~/.rvm/gems/ruby-2.0.0-p353/gems/virtus-1.0.2/lib/virtus/attribute/strict.rb:19:in `coerce'

Notice that booleans silently has the non-coercible values, while boolean will raise the strict error.