The following is a summary of changes since the last release:
**New features**
* Whisper
* Allocate Whisper files in chunks by default (jordansissel)
* Allow Whisper files to be allocated sparsely (jordansissel)
* Add whisper-merge command to copy data from one file to another (sidnei)
* Add whisper-dump utility (amosshapira)
* Graphite Dashboard
* New button to retrieve Graph URL (octplane)
* Add button to send email of rendered graph as attachment (bkjones)
* Allow relative ‘until’ time to be set in dashboard (daniellawrence)
* Add ability to import Graphs into dashboards from URL or Saved Graphs
* Rendering Engine:
* New minorY option to configure minor gridlines (whd)
* New alpha() function to set individual color alpha values (tmm1)
* Allow areaAlpha to set alpha values for all styles of stacked graphs (tmm1)
* New minimumAbove() function: draw only series whose min is above n (tmm1)
* New areaBetween() function: draw the area between two graph lines (tmm1)
* New holtWintersConfidenceArea() function: display area between Holt-Winters confidence bands (tmm1)
* New SVG output format with embedded graph metadata (tmm1)
* New metric whitelist/blacklist functionality using pattern files
* New filterBelowPercentile() function: remove data below n percentile from a series (tmm1)
* New removeAbovePercentile() and removeAboveValue() functions to remove outliers (tmm1)
* New removeBelowPercentile() and removeBelowValue() functions to match above counterparts
* New aliasSub() function: perform a regex search/replace on metric names (tmm1)
* New rangeOfSeries() function: reduces multiple series into the value range of each point (saysjonathan)
* New movingMedian() function: moving median, similar to movingAverage (recursify)
* New multiplySeries() function: combine series by multiplying them
* New hideYAxis option (mdeeks)
* New percentileOfSeries() function: Combines series into the value at n percentile for each point
* New tranformNull() function: transforms None values to specified (cbrinley)
* New scaleToSeconds() function: scales values based on series step (redbaron)
* New aliasByMetric() function: trims all but the last element of metric name in legend (obfuscurity)
* New uniqueLegend option to filter duplicate metric names in legend (mdeeks)
* New vtitleRight option to label 2nd Y-axis
* Carbon
* Allow flock() mode to be configured for Whisper
* Allow flushing of rrdcached before rrd data fetches (shufgy)
* Add ability to configure carbon metric prefix (jblaine)
**Bug fixes**
* Whisper
* Record only the last value when duplicate timestamps are sent (knyar)
* Fix rrd2whisper.py script to work with newer python-rrdtool api
* Carbon
* Fix full drain of queue after cache-full event when flow-control is enabled in both client and carbon-cache
* Fix unnecessary drop of a single metric point when cache is full
* Fix instrumentation of carbon-relay (darrellb)
* Webapp
* Fix reading of Gzip’d whisper files and remote reading of RRDs
* Fix registration of Event model in admin site
* Fix events() to work with timezone aware dates
* Fix Event model to use tagging properly and fix compatibility with MySQL (hellvinz)
* Fix compatibility of built-in json module in events and graphlot
* Fix loading of saved graphs where a target has a ‘%’ in the name
* Rendering Engine
* Fix removal of whitespace above stacked graphs with yMax setting (tmm1)
* Use powers of 2 when calculating yStep and yUnitSystem=binary (tmm1)
* Force 100% usage of vertical space when yMax=max
* Compact memcached keys to keep size under 250 after Django processing (Kevin Clark)
* Fix alignFromTrue functionality in summarize() (tmm1)
* Fix cases of mismatched units in holt-winters bootstraps (lapsu,tmm1)
* Force integer in moving average window parameter (lapsu)
* Fix incorrect cache fetch when storage dir is symlinked (mk-fraggod)
* Fix infinite loop in Y-axis render when series range is very-very small
* Fix “Undo Function” button when braces expressions are present in the target
* Fix legend column calculation (darrellb)
* Fix broken aliasByNode() (darrellb)
* Fix rendering failures when infinite values are present in series
* Fix legend text overlap with dual Y-axis mode (nleskiw)
* Fix missing hunk of graph on right side with Dual Y-axis
* Fix cactiStyle() handling of None values
* Fix rendering breakage during DST time switch
* Allow multiple named stacks of metrics (aleh)
* Fix incorrect/misaligned graphs when series with unaligned steps are mixed in a graph
* Properly shift over series that have a later start time than the graph start
* Composer
* Fix JS error on IE due to tailing list commas (reed-r-lance)
* Fix usage of + instead of %20 for spaces in URL encoding in composer view
* Fix display of a broken image rather than “No Data” when last target is removed
* Fix the loss of multiple targets when loading a saved graph with new params (vilkaspilkas)
* Fix unremovable duplicate metrics
* Dashboard
* Fix automatic edit field selection on click (octplane)
* Fix usage of browser cache-busting uniq parameter to be filtered from memcache key (sidnei)
* Fix inability to remove Graphs with duplicate target lists
**Other improvements**
* Carbon
* Match time units used in storage-schemas.conf with those in the webapp (ohlol)
* Only log Carbon queue fullness once (sidnei)
* Only log Carbon queue space free if it was once full (sidnei)
* Log a message with the affected filename when a Whisper update fails (bmhatfield)
* Move carbon instance logs to their own own directory to prevent clobbering
* Prevent carbon-aggregator from clobbering aggregated values when aggregating to same-name
* Add SSL option to amqp publisher (sidnei)
* Remove duplicate dot metric path filtering for performance (drawks)
* Refactor of schema validation to give more informative errors
* Add reloading of rewrite-rules and aggregation-schemas for consistency
* Webapp
* Refactor settings.py to allow more complete configuration in local_settings.py
* Make Graphite compatible with Django 1.4
* Add jsonp support for /browser endpoint
* Make it harder to break metric browsing with a bad DATA_DIRS entry
* Rendering Engine:
* Make asPercent() much more flexible and useful
* stddev() function made more robust
* Allow metrics to begin with a braces-wildcard
* Prevent drawAsInfinite() lines from affecting Y axis height (bmhatfield)
* Pass through time with secondly rather than minutely resolution to rrdfetch (tmm1)
* Tree branches should display above all leaves (mdeeks)
* Add alignToInterval to hitcount() function similar to summarize() (jwoschitz)
* Fix PieGraph missing function
* Allow timeShift() to shift forward as well as backward
* Composer
* Don’t reorder targets when applying functions
* Refactor of Graph Options menu
* Dashboard
* Explicitly size img tags to keep scroll position intact during reloads
* Default the navBar as collapsed when loading an existing dashboard view
* Show wildcards in top nav browsing view
* Allow dashboards to have any character in title (octplane)
* Make “Remove All Graphs” and “Change Size” dialogs modal (dannyla)
* Make the new “north” navbar the default
