Changes

Minor fixes.
 (commit: fbead0f)

[Fix] Support caching entities which override equals/hashCode.
 (commit: 23a3bb9)

[Feature #36] Added basic support for LocalDate and LocalDateTime.
 (commit: cd68527)

[Feature #36] Refactoring of LocalDate and LocalDateTime
transformations.
 (commit: e1b627a)

[Feature #36] Working on support for java.time.Instant. Trying to find
the best structure for type transformers.
 (commit: 2c7aac5)

[Feature #36] Added AttributeConverter interface for custom attribute
type conversion. Implemented Java 8 Date/Time conversion in terms of
this interface.
 (commit: 6a0bc05)

Introduced common base class for attribute implementations.
 (commit: f4c1166)

Initialize converters for attributes during metamodel build.
 (commit: 44dd16e)

Working on refactoring of attributes and strategies.
 (commit: c0485a3)

Added built-in converters for data and annotation property values.
Implemented basic converter resolution.
 (commit: ef41e40)

Migrated metamodel to the new converter system.
 (commit: e755bdd)

Modified enum handling - added a generic EnumConverter which is used in
a manner consistent with any other converters. Enum thus no longer
require any special treatment.
 (commit: b38eab7)

[Upd] Upgraded to the latest versions of AspectJ, Jena, OWL API and
RDF4J.
 (commit: 7606024)

[Feature #36] Verify update behavior. Fixed issues with cloning Java 8
Instant instances.
 (commit: 432f881)

[0.10.7] Bumped version and updated release notes.
 (commit: a31d397)