Add github update.
Slovak translation update from Branco Radenovich.

Update Issue 584
Labels: Milestone-1.5.4
Document opts property.
Add a test for combined category and term query.
German translation update from Thomas Morvay.

Update Issue 160
Labels: Milestone-1.5.4
Props Thomas Morvay.
Small doc and code cleanups.
Add one more significant digit in link test.
Make search result content filter callable multiple times.

Update Issue 637
Status: Fixed
Add a credit link for Romanian translation.
Correct documentation and access errors.
Get the MarkerClustererPlus library working with googlev3.
Add an action to modify MarkerClustererOptions.
Use a local cluster icon.

Update Issue 381
Status: Implemented
Labels: Milestone-1.6
Got MarkerClusterer working! There has been lots of interest in this but
no financial support - donations would help to test, polish, and release it.

https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=11045324
Add a googlev3 clustering test.
Update WP unit test library.
Only install a new database version once.
Try adding error condition to connection-sensitive test.
Merge branch 'google-v3-cluster' into 1.6-dev

Incorporate clustering work.
Update map iframe for HTML5 compliance.

Update Issue 633
Status: Implemented
Check for multibyte string functions before using.

Update Issue 636
Status: Fixed
You should get a warning message now instead of a fatal error when multibyte
string functions aren't installed.