Carbonate

- carbon-sync: expose --overwrite to copy all non-null datapoints (PR89, jehiah)
- fill: fix bugs causing some data points not to be copied (PR90, jehiah)

- passing empty list for nodes seems to work (PR87, olevchyk)

- (Experimental) support for fnv1a_ch hashing (PR83, deniszh)

- Bumping version to 1.0.0 to match Graphite releases
- unpin Twisted, remove py26 support (PR78, iksaif). Carbonate should still be Python 2.6 compatible, but newer Twisted is not
- Fix reading whisper_lock_writes from cluster config in carbon_sync (PR77, justincmoy)

- support new versions of carbon (PR74 wdauchy)
- lock whisper files during carbon-sync and whisper-fill (PR48 fillipog, PR71 deniszh)
- Fixes and optimizations for carbonate (PR68 iksaif, PR70 deniszh)
- Make the heal process resilient (PR42 jjneely, PR69 deniszh)
- Add option to follow symlinks (PR65 tmak0)
- Do not overwrite target WSP file if source is corrupt (PR52 jjneely)
- 'carbon-stale' tool to help find metrics with blank/missing data (PR30 bitprophet)
- remove shebang, not a cli script (PR55 piotr1212)
- mention environment variables in README.md (PR53 fillipog)
- Fixup badge link in readme (PR66 dozoisch)
- Add dirty mode for sync (PR39 iksaif)
- Read config-file and cluster options from environ (PR49 fillipog)

- Load `/opt/graphite/lib` into python's path when executing any binstubs
- Bugfix in carbon-sieve where `--node` was not specified (kamaradclimber)
- Bugfix in carbon-sieve where main cluster doesn't exist (seanpquig)
- Add new carbon-path tool :sparkles: (bitprophet)
- Bugfix in whisper-aggregate
- Make carbon-sieve filter correctly with long address formats (tail)
- Add `-s` flag to carbon-lookup that displays IP/hostname only
- Support passing options to rsync during carbon-sync (jphines)