Issue: SPR-12705

Protected handleResponse method replaces former private logResponseStatus/handleResponseError methods.

Issue: SPR-12760

- classes now compiled with `-parameters`
- formatting for lambda expressions
- formatting for type annotations

To eliminate code duplication, ScriptStatementFailedException and
ScriptUtils now delegate to a new buildErrorMessage() utility method.

Issue: SPR-12752

This commit ensures Resources have consistent, non-empty, meaningful
implementations for getDescription(), thus ensuring that calls to
toString() (e.g., in log statements) no longer return an empty String.

This commit also polishes the Javadoc for various Resource
implementations.

ScriptStatementFailedException now properly refers to statement numbers
instead of line numbers.

Issue: SPR-12752

Added connectTimeout and readTimeout properties to the
Netty4ClientHttpRequestFactory.

Issue: SPR-12612

Issue: SPR-12735

Issue: SPR-12739

Issue: SPR-12755

Issue: SPR-12758

Issue: SPR-12748

Issue: SPR-12747

Prior to this change, location checks for serving resources would append
`/` to the location path it didn't already have one.

This commit makes sure not to append a `/` if the provided location is
actually a file.

Issue: SPR-12747

* pull745:
  Provide accessors to scheduled tasks

Updated ScheduledTaskRegistrar to offer accessors to the tasks
it is responsible to schedule.

Issue: SPR-12748

Reduce logging level when no target annotation is found a on bean. For
consistency, update ScheduledAnnotationBeanPostProcessor and
JmsListenerAnnotationBeanPostProcessor that define the same log
statement.

Issue: SPR-12574

Issue: SPR-12751

Issue: SPR-12744

Issue: SPR-12752

Animal Sniffer 1.11 fails against XStream 1.4.8 due to classes with 1.8 bytecode level.
Animal Sniffer 1.14 will finally include ASM 5.0.3 for proper 1.8 bytecode support.

Add test that wasn't committed because it matches the ignore list.

Extract the creation of RequestMappingHandlerMapping into protected
method to allow easier use of custom subclasses.

Issue: SPR-12746

Add StreamConverter to provide full support for converting
java.util.stream.Stream instances to and from collections or arrays.

Also attempt to convert the element type if necessary.

StreamConverter is registered by default in the DefaultConversionService
as long as Java8 is available.

Issue: SPR-12175

Fix reserved set definition according to appendix A of RFC 3986

Issue: SPR-12701

Issue: SPR-12654