v0.31.0-rc1

Changes in synapse v0.31.0-rc1 (2018-06-04)

Most notable change is to switch to python prometheus library to improve system stats reporting. WARNING this changes a number of prometheus metrics in a backwards-incompatible manner. For more details, see
docs/metrics-howto.rst.

Features:

• Switch to the Python Prometheus library (PR #3256, #3274)
• Let users leave the server notice room after joining (PR #3287)

Changes:

• daily user type phone home stats (PR #3264)
• Use iter* methods for _filter_events_for_server (PR #3267)
• Docs on consent bits (PR #3268)
• Remove users from user directory on deactivate (PR #3277)
• Avoid sending consent notice to guest users (PR #3288)
• disable CPUMetrics if no /proc/self/stat (PR #3299)
• Add local and loopback IPv6 addresses to url_preview_ip_range_blacklist (PR #3312) Thanks to @thegcat!
• Consistently use six's iteritems and wrap lazy keys/values in list() if they're not meant to be lazy (PR #3307)
• Add private IPv6 addresses to example config for url preview blacklist (PR #3317) Thanks to @thegcat!
• Reduce stuck read-receipts: ignore depth when updating (PR #3318)
• Put python's logs into Trial when running unit tests (PR #3319)

Changes, python 3 migration:

• Replace some more comparisons with six (PR #3243) Thanks to @NotAFile!
• replace some iteritems with six (PR #3244) Thanks to @NotAFile!
• Add batch_iter to utils (PR #3245) Thanks to @NotAFile!
• use repr, not str (PR #3246) Thanks to @NotAFile!
• Misc Python3 fixes (PR #3247) Thanks to @NotAFile!
• Py3 storage/_base.py (PR #3278) Thanks to @NotAFile!
• more six iteritems (PR #3279) Thanks to @NotAFile!
• More Misc. py3 fixes (PR #3280) Thanks to @NotAFile!
• remaining isintance fixes (PR #3281) Thanks to @NotAFile!
• py3-ize state.py (PR #3283) Thanks to @NotAFile!
• extend tox testing for py3 to avoid regressions (PR #3302) Thanks to @krombel!
• use memoryview in py3 (PR #3303) Thanks to @NotAFile!

Bugs:

• Fix federation backfill bugs (PR #3261)
• federation: fix LaterGauge usage (PR #3328) Thanks to @intelfx!