Reduce metaprogramming

Just a small refactor to remove unneeded metaprogramming. See #44

Value Coercion

This release includes a new feature that supports the coercion of some value into a specific mutable struct type. Currently it supports Hashes compatible with the struct's initializer. See #42 for more details.

v2.3.0.rc1

RC release to incorporate #33, which allows .to_json calls on ImmutableStruct objects to be made recursively and include all Zero-argument methods as well.

v2.2.3

• [FIX] Handle array attributes in hash/equality methods. Fixed with PR #28

v2.2.2

• Added hash method to enable immutable-struct instances to be Set-friendly. Hash code values are constructed from the state (all attribute values) and the class
• Modified to_h method to only call methods with zero args. Addresses issue logged as "#to_h serializes all instance methods" from @nandosola's PR. Thank you, @nandosola!

v2.2.0

• Adds merge which creates a new object based on the current one with the given properties overridden. Thanks @toddmohney (see #15)

v2.1.2

• Added == and eql? support; closes #11. Thanks, @swanandp!
• Minor modification to method implementation in test struct in spec.

v2.1.1

• Update email contact and homepage
• gemspec updates

v2.1.0

• Array coercion as an option via ImmutableStruct.new(:name,[:addresses]). See #2