code coverage hookup
Add preserve original token option to ASCIIFolding

Closes #4931
Add support for `lowercase_expanded_terms` flag to simple_query_string

Default the flag to true, making simple_query_string behave similarly to
query_string

Fixes #5008
Fix license header for SimpleQueryParser
Enable percolation for nested documents

closes #5082
Optimize multiple cluster state processing on receiving nodes
Nodes that receive the cluster state, and they have several of those pending, can optimize and try and process potentially only one of those.
closes #5139
Added support for aliases to create index api

It is now possible to specify aliases during index creation:

curl -XPUT 'http://localhost:9200/test' -d '
{
    "aliases" : {
        "alias1" : {},
        "alias2" : {
            "filter" : { "term" : {"field":"value"}}
        }
    }
}'

Closes #4920
[DOCS] Remove clear flag from node-stats as it is not used anymore
Source filtering with wildcards broken when given multiple patterns

```
curl -XPUT 'http://localhost:9200/twitter/tweet/1' -d '{
    "user" : "kimchy",
    "post_date" : "2009-11-15T14:12:12",
    "message" : "trying out Elasticsearch", "retweeted": false
}'
```

No source fields delivered:

```
curl -XGET 'http://localhost:9200/twitter/tweet/1?_source=*.id,retweeted&pretty=yes'
```

`retweeted` returned:

```
curl -XGET 'http://localhost:9200/twitter/tweet/1?_source=retweeted,*.id&pretty=yes'
```

Closes #5132.
Closes #5133.
Fix typo
Set permission in debian postinst script correctly

The old post installation script on debian set all data to
644 inside of /etc/elasticsearch, which does not work, when
there are subdirectories

Closes #3820
support help as well as h in direct cat call to list all actions
[DOCS] Javadoc: delete index request does not support empty String

In 0.90.x I was able to delete all my indices from the java api by calling

    client.admin().indices().prepareDelete(new String[] {}).execute().actionGet();

However this fails in 1.0.0 with

org.elasticsearch.action.ActionRequestValidationException: Validation Failed: 1: index / indices is missing;
	at org.elasticsearch.action.ValidateActions.addValidationError(ValidateActions.java:29)
	at org.elasticsearch.action.admin.indices.delete.DeleteIndexRequest.validate(DeleteIndexRequest.java:72)
	*snip long stacktrace*

which points me to

    public ActionRequestValidationException validate() {
        ActionRequestValidationException validationException = null;
        if (indices == null || indices.length == 0) {
            validationException = addValidationError("index / indices is missing", validationException);
        }
        return validationException;
    }

So that's what now throws the error, however the documentation still says:

    /**
     * Deletes an index based on the index name.
     *
     * @param indices The indices to delete. Empty array to delete all indices.
     */
    DeleteIndexRequestBuilder prepareDelete(String... indices);

Closes #5164.
Closes #5167.
Closes #5168.
Fix SearchContext from being closed prematurely

Fixes SearchContext from being closed during initialization or immediately
after processing is started

Closes #5165
Add test and randomization for #5165
Alias code cleanup

- Renamed IndexMetaData#removerAlias to removeAlias
- Removed IndexTemplateMetaData#fromXContentStandalone unused method (relates to #4511)
- MetaDataIndexAliasesService fix typo in comment
- Alias removed unused constructor that accepts both alias name and filter
[TEST] Added tests for alias filter that is valid json but not a valid filter
Added script to extract release notes

Just call ./es_release_notes.pl <issue-tag> to get all release notes.

By default html output is returned, but you can switch to markdown by calling
./es_release_notes.pl <issue-tag> markdown
[DOCS] Fixed typo in create index api
[TEST] Initialization errors are checked before returning "no tests to run" error

If there initialization errors and no tests to execute at the same time, better to return the initialization errors, whose check should be first then, as it might be that the "no tests to execute" is caused by the initialization errors.