[pkg] fold in changes

CHANGELOG

client/changes/bug_2945_do-not-depend-on-pysqlite2

...hanges/bug_5855_reset-connection-on-http-error-during-syn

client/changes/bug_5975_wait-for-last-request-on-sync

client/changes/bug_6437_use_tls

client/changes/bug_6625_retry-on-sqlcipher-thread-timeout

client/changes/bug_6757_fix-order-of-insertion-when-syncing

client/changes/bug_6797_add-dependency-on-twisted

client/changes/bug_6892_fix-log-message-for-local-secret

client/changes/bug_always-initialize-the-sync-db

client/changes/bug_cutoff-chardet-guessing

client/changes/bug_fix-async-decrypt

client/changes/bug_improve-log-when-fetching-documents

...nges/feature_5895-store-all-incoming-documents-in-sync-db

client/changes/feature_6400_include-iv-in-document-mac

client/changes/feature_adapt-to-new-events-on-common

client/changes/feature_add-pool-of-http-https-connections

client/changes/feature_use-twisted-adbapi-for-sync-db

client/changes/feature_use-twisted-web-for-client-sync

common/changes/bug_5896_include-ddocs-source-in-sdist