Report from the Apache Lucene project [Mark Miller]

## Description: 
 - Lucene Core is a search-engine toolkit.
 - Solr is a search server built on top of Lucene Core.

## Activity: 
 - The community is very active as can be seen via the below stats.
 - We have submitted a resolution to change the PMC Chair from Mark Miller
   to Michael McCandless.
   
## Issues: 
 - There are no issues requiring board attention at this time.
   
## PMC/Committership changes: 
   
 - Currently 54 committers and 35 PMC members in the project. 
 - Timothy Potter was added to the PMC on Tue May 26 2015 
 - Last committer addition was Ramkumar Aiyengar at Sat Feb 28 2015 
   
## Releases: 
   
 - 5.1 was released on Tue Apr 14 2015
 - 5.2 was released on Sun June 7 2015
 - 5.2.1 is in process.
   
## Mailing list activity: 
   
 - dev@lucene.apache.org:  
    - 816 subscribers (up 13 in the last 3 months): 
    - 10140 emails sent to list (10528 in previous quarter) 
   
 - c-commits@lucene.apache.org:  
    - 17 subscribers (up 0 in the last 3 months): 
    - 0 emails sent to list (0 in previous quarter) 
   
 - ruby-dev@lucene.apache.org:  
    - 68 subscribers (up 0 in the last 3 months): 
    - 0 emails sent to list (0 in previous quarter) 
   
 - general@lucene.apache.org:  
    - 943 subscribers (down -5 in the last 3 months): 
    - 40 emails sent to list (21 in previous quarter) 
   
 - solr-commits@lucene.apache.org:  
    - 95 subscribers (up 0 in the last 3 months): 
    - 0 emails sent to list (0 in previous quarter) 
   
 - java-user@lucene.apache.org:  
    - 1094 subscribers (down -8 in the last 3 months): 
    - 287 emails sent to list (513 in previous quarter) 
   
 - solr-user@lucene.apache.org:  
    - 3463 subscribers (up 30 in the last 3 months): 
    - 3217 emails sent to list (2952 in previous quarter) 
   
 - java-commits@lucene.apache.org:  
    - 95 subscribers (down -1 in the last 3 months): 
    - 0 emails sent to list (0 in previous quarter) 
   
 - pylucene-commits@lucene.apache.org:  
    - 9 subscribers (up 0 in the last 3 months): 
    - 6 emails sent to list (2 in previous quarter) 
   
 - pylucene-dev@lucene.apache.org:  
    - 121 subscribers (up 1 in the last 3 months): 
    - 22 emails sent to list (24 in previous quarter) 
   
 - c-dev@lucene.apache.org:  
    - 79 subscribers (up 0 in the last 3 months): 
    - 0 emails sent to list (0 in previous quarter) 
   
   
## JIRA activity: 
   
 - 616 JIRA tickets created in the last 3 months 
 - 445 JIRA tickets closed/resolved in the last 3 months