6.0.0

• [BC BREAK] Dropped support for PHP < 7.1.
• [IMPROVED] Support for non-public enumeration constants (#24, #26) (thanks @Bilge).

5.1.1

• [IMPROVED] Use static in docblocks for better IDE hints (#20) (thanks
  @Bilge).
• [MAINTENANCE] General repository maintenance

5.1.0

• [NEW] Implemented memberOrNullBy() and variants

5.0.1

• [MAINTENANCE] General repository maintenance

5.0.0

• [BC BREAK] Renamed classes:
  • Multiton -> AbstractMultiton
  • Enumeration -> AbstractEnumeration
• [BC BREAK] Exceptions no longer extend LogicException, but instead
  directly extend from the base Exception class.
• [NEW] Implemented AbstractValueMultiton, an an abstract base class for
  implementing multitons with values. AbstractEnumeration now extends from
  this base class.
• [NEW] Implemented AbstractUndefinedMemeberException, an abstract base
  class for implementing custom undefined member exceptions.
  UndefinedMemberException now extends from this base class.
• [NEW] Multiton instances now implement formal interfaces:
  • AbstractMultiton instances implement MultitonInterface.
  • AbstractValueMultiton instances implement ValueMultitonInterface.
  • AbstractEnumeration instances implement EnumerationInterface.
• [NEW] Implemented membersBy() and membersByPredicate() which help to
  retrieve sets of members by various criteria.

4.0.0

• [BC BREAK] Multiton method name changes:
  • multitonInstances -> members
  • instanceByKey -> memberByKey
  • instanceBy -> memberBy
  • instanceByPredicate -> memberByPredicate
  • initializeMultiton -> initializeMembers
  • registerMultiton -> registerMember
  • createUndefinedInstanceException -> createUndefinedMemberException
• [BC BREAK] Enumeration method name changes:
  • instanceByValue -> memberByValue
• [BC BREAK] Renamed classes:
  • UndefinedInstanceException -> UndefinedMemberException
  • UndefinedInstanceExceptionInterface -> UndefinedMemberExceptionInterface
• [NEW] Case insensitive options for member search methods
• [NEW] Defaulting variants of member search methods
• [MAINTENANCE] General repository maintenance

3.0.2

• [NEW] Archer integration
• [NEW] Implemented changelog

3.0.1

Fixing namespacing issues. Relates to #13.

3.0.0

Implemented customizable exception. Closes #13.

2.1.2

Updated composer lock file.