docs: added release notes for 4.19.0

docs/release-notes/release-notes-4.19.0.rst

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+|RCE| 4.19.0 |RNS|
+------------------
+
+Release Date
+^^^^^^^^^^^^
+
+- 2020-05-22
+
+
+New Features
+^^^^^^^^^^^^
+
+- Pull requests: add information about changes in source repositories in pull-request show page.
+  Fixes #5611, Fixes #5561
+  Added new preview for size (commits/files) of PRs before opening, this is now based
+  on the special logic that calculates common ancestor and has access to preview diff
+  Store common ancestor in DB so updates of pull-requests are consistent
+- Pull requests: fixed case for GIT repositories when a merge check failed due to
+  merge conflicts the pull request wrongly reported missing commits.
+  we're now searching for dangling commits in a repo that has them and cannot see them
+  because of failed merge checks.
+- Pull requests: allow filter displayed results by author
+- Pull requests: added filters to my account pull requests page.
+- Quick search: added ability to search for pull-requests using `pr:` prefix.
+  Permissions are checked against the access to target repositories, and users
+  can now search for pull request number, description or title.
+- UI: replaced js prompts with sweet-alert prompts.
+- SVN: bumped shipped SVN to 1.13.0 release.
+- Integration Hooks: added new hooks for comments on pull requests and commits.
+  Allows writing custom actions on top of commenting.
+  E.g `@CI-BOT re-test` could trigger CI job to re-test a pull requests or commit.
+  Added new rcextension hooks, Fixes #5583, and added examples on how to trigger CI build on certain comments.
+- Exception tracker: added possibility to send notification email when server encountered an unhandled exception.
+  new .ini file flag: `exception_tracker.send_email = false` and `exception_tracker.send_email_recipients =`
+  can be set to enable this function.
+- Mercurial: enable enhanced diffs for Mercurial that show context of changed functions inside the diff.
+  This makes diff actually more consistent with how GIT backend shows them. Fixes #5614
+
+
+General
+^^^^^^^
+
+- Pull requests: fixed small UI glitches in pull request view.
+- System Info: Python packages now expose the package location info.
+- Exceptions: don't report lookup errors as exceptions stored in the exception store.
+  Those are regular not found problems that don't indicate any exceptional case
+  also make the errors report nicer, not as KeyError, or generic Exception
+- Exception tracker: store request info if available to track which URL caused an error.
+- Integrations: handle new commenting events and optimize calls for Jira/Redmine
+  Speed up issue fetching by optimizing how Jira/Redmine client behaves
+  For redmine we don't iterate issues anymore which is *much* faster, and makes pushes with tickets faster.
+- SVN: allow to specify any svn compatible version string not only hardcoded values.
+  The new SVN code allows to specify this by numeric values now. e.g 1.13 etc.
+  Fixes #5605.
+- Emails: added `premailer` parsing for inline style formatting to make emails render
+  nicer on all email clients.
+- Repositories: switched repo type selector to radio buttons and preserve order of
+  enabled backends inside .ini files.
+- Repositories: show recommendation for updating hooks if they are outdated.
+- Files: add pre-commit checks on file edit/delete/add operations. This prevents
+  loosing content while editing when repositories changes during those operations.
+  Fixes #5607.
+- Files: changed the copy path label to indicate we're actually copying only the path.
+  Added copy permalink helper to copy the url quickly. Fixes #5602
+- LDAP: updated ldap plugin to help with debug and support by extending logging and
+  improving error messages.
+- LDAP: fixed example LDAPs port.
+- Dependencies: bump redmine client.
+- Dependencies: bumped bleach==3.1.3
+- Dependencies: bumped webtest==2.0.34
+- Dependencies: bumped packaging==20.3
+- Dependencies: bumped pyparsing==2.4.7
+- Dependencies: bumped sqlalchemy==1.3.15
+- Dependencies: bumped hupper==1.10.2
+- Dependencies: bumped alembic==1.4.2
+- Dependencies: bumped wcwidth==0.1.9
+- Dependencies: bumped python-ldap==3.2.0
+- Dependencies: bumped importlib-metadata==1.5.0
+- Dependencies: bumped redis==3.4.1
+- Dependencies: bumped importlib-metadata==1.6.0
+- Dependencies: bumped pytz==2019.3
+- Dependencies: bumped paste==3.4.0
+- Dependencies: bumped weberror==0.13.1
+- Dependencies: bumped pyparsing==2.4.6
+- Dependencies: bumped ipdb==0.13.2
+- Dependencies: bumped pastedeploy==2.1.0
+- Dependencies: bumped docutils==0.16.0
+- Dependencies: bumped pyramid-debugtoolbar==4.6.1
+- Dependencies: bumped gevent==1.5.0
+- Dependencies: bumped psutil==5.7.0
+
+
+Security
+^^^^^^^^
+
+- Logging: expose usernames in the logs for each request made to RhodeCode.
+  This enables auditing capabilities for all actions against the web interface.
+- Users: increased security on the way we're displaying authentication tokens.
+  We don't expose all on single page. Request needs a validation before viewing of each token.
+- Logging: added some nicer logging for file path ACL checks.
+- Audit Log: extend the commit api data with references to commit_id or pull_request_id.
+  This allows tracking those in the audit-logs.
+
+
+Performance
+^^^^^^^^^^^
+
+- Exception Tracker: optimized the check for smtp_server before doing heavy lifting
+  of exception email sending.
+- Auth: enabled cache flags for fetching ACL ids.
+  Those are now safe to cache since we have a proper cache invalidation logic for
+  permissions of users, for lots of repo this makes our goto switcher much much faster.
+- Application: use simpler way to extract default_user_id, this will be now registered
+  at server boot, reducing number of times we fetch this from database.
+- Pull requests: changed reviewers metadata function for optimizing the diff calculations.
+  We're now doing a single request to calculate reviewers and diff preview instead of twice like before.
+
+
+Fixes
+^^^^^
+
+- GIT: fixed readme searcher for Git repositories using libgit2 and non-ascii directories.
+- Full text search: fixed error while highlighting special search terms e.g 'enabled \= '
+- Full text search: fixed problems with non-ascii files indexing.
+- Diffs: improve text on unresolved comments attached to files that no longer exist in the review.
+  Fixes #5615.
+- Auth: fixed generation of authomatic secrets for new plugins.
+- Auth: failsafe github auth if it doesn't provide full name for users.
+- Permissions: fixed problem with permissions changes from permission page due to missing cache flush.
+  This caused certain permission changed be visible after some time of the edit.
+  We now ensure *all* caches used for permissions are properly flushed right after the change.
+- SVN: explicitly specify tunnel-user to properly map rhodecode username on svn commit
+  via SSH backend. Fixes #5608.
+- SVN: fixed case of wrong extracted repository name for SSH backend. In cases
+  where we commit to a nested subdirs SVN reported the access path with the subdir paths in it.
+  We couldn't then match that extended name into proper rhodecode repository for ACL checks.
+  Current implementation gives an slight overhead as we have to lookup all repositories.
+  Fixes #5606
+- SVN: fixed problem with special characters inside subdirectories.
+- SVN: fixed SVN refs switcher on files that used old format of diff url. Fixes #5599, #5610
+- Search: remove excessive quoting on search pagination. Fixes #5604
+- File browser: fixed the repo switcher `?at=` flag being lost when walking on the file tree.
+- File browser: fixed unicode problems on image preview, and make images center, no-stretch.
+- DB migrations: fixed db migrate for latest sqlite version.
+- Feed generator: fixed missing utc definition that could cause server 500 error.
+
+
+Upgrade notes
+^^^^^^^^^^^^^
+
+- RhodeCode has been tested on CentOS/RHEL 8 and we added those as officially supported platforms.
+- This release introduces lots of optimizations and changes how the pull requests reviewers,
+  and diff preview is made. We cut the pull request creation time by 50%.
+  Please look closer to this new logic na report any potential problems with this change.
+- SVN was bumped to 1.13 version.
  No newline at end of file

docs/release-notes/release-notes.rst

@@ -1,140 +1,141 b''
 .. _rhodecode-release-notes-ref:
 
 Release Notes
 =============
 
 |RCE| 4.x Versions
 ------------------
 
 .. toctree::
    :maxdepth: 1
 
+   release-notes-4.19.0.rst
    release-notes-4.18.3.rst
    release-notes-4.18.2.rst
    release-notes-4.18.1.rst
    release-notes-4.18.0.rst
    release-notes-4.17.4.rst
    release-notes-4.17.3.rst
    release-notes-4.17.2.rst
    release-notes-4.17.1.rst
    release-notes-4.17.0.rst
    release-notes-4.16.2.rst
    release-notes-4.16.1.rst
    release-notes-4.16.0.rst
    release-notes-4.15.2.rst
    release-notes-4.15.1.rst
    release-notes-4.15.0.rst
    release-notes-4.14.1.rst
    release-notes-4.14.0.rst
    release-notes-4.13.3.rst
    release-notes-4.13.2.rst
    release-notes-4.13.1.rst
    release-notes-4.13.0.rst
    release-notes-4.12.4.rst
    release-notes-4.12.3.rst
    release-notes-4.12.2.rst
    release-notes-4.12.1.rst
    release-notes-4.12.0.rst
    release-notes-4.11.6.rst
    release-notes-4.11.5.rst
    release-notes-4.11.4.rst
    release-notes-4.11.3.rst
    release-notes-4.11.2.rst
    release-notes-4.11.1.rst
    release-notes-4.11.0.rst
    release-notes-4.10.6.rst
    release-notes-4.10.5.rst
    release-notes-4.10.4.rst
    release-notes-4.10.3.rst
    release-notes-4.10.2.rst
    release-notes-4.10.1.rst
    release-notes-4.10.0.rst
    release-notes-4.9.1.rst
    release-notes-4.9.0.rst
    release-notes-4.8.0.rst
    release-notes-4.7.2.rst
    release-notes-4.7.1.rst
    release-notes-4.7.0.rst
    release-notes-4.6.1.rst
    release-notes-4.6.0.rst
    release-notes-4.5.2.rst
    release-notes-4.5.1.rst
    release-notes-4.5.0.rst
    release-notes-4.4.2.rst
    release-notes-4.4.1.rst
    release-notes-4.4.0.rst
    release-notes-4.3.1.rst
    release-notes-4.3.0.rst
    release-notes-4.2.1.rst
    release-notes-4.2.0.rst
    release-notes-4.1.2.rst
    release-notes-4.1.1.rst
    release-notes-4.1.0.rst
    release-notes-4.0.1.rst
    release-notes-4.0.0.rst
 
 |RCE| 3.x Versions
 ------------------
 
 .. toctree::
    :maxdepth: 1
 
    release-notes-3.8.4.rst
    release-notes-3.8.3.rst
    release-notes-3.8.2.rst
    release-notes-3.8.1.rst
    release-notes-3.8.0.rst
    release-notes-3.7.1.rst
    release-notes-3.7.0.rst
    release-notes-3.6.1.rst
    release-notes-3.6.0.rst
    release-notes-3.5.2.rst
    release-notes-3.5.1.rst
    release-notes-3.5.0.rst
    release-notes-3.4.1.rst
    release-notes-3.4.0.rst
    release-notes-3.3.4.rst
    release-notes-3.3.3.rst
    release-notes-3.3.2.rst
    release-notes-3.3.1.rst
    release-notes-3.3.0.rst
    release-notes-3.2.3.rst
    release-notes-3.2.2.rst
    release-notes-3.2.1.rst
    release-notes-3.2.0.rst
    release-notes-3.1.1.rst
    release-notes-3.1.0.rst
    release-notes-3.0.2.rst
    release-notes-3.0.1.rst
    release-notes-3.0.0.rst
 
 |RCE| 2.x Versions
 ------------------
 
 .. toctree::
    :maxdepth: 1
 
    release-notes-2.2.8.rst
    release-notes-2.2.7.rst
    release-notes-2.2.6.rst
    release-notes-2.2.5.rst
    release-notes-2.2.4.rst
    release-notes-2.2.3.rst
    release-notes-2.2.2.rst
    release-notes-2.2.1.rst
    release-notes-2.2.0.rst
    release-notes-2.1.0.rst
    release-notes-2.0.2.rst
    release-notes-2.0.1.rst
    release-notes-2.0.0.rst
 
 |RCE| 1.x Versions
 ------------------
 
 .. toctree::
    :maxdepth: 1
 
    release-notes-1.7.2.rst
    release-notes-1.7.1.rst
    release-notes-1.7.0.rst
    release-notes-1.6.0.rst