- Patch #232037 by pwolanin and flobruit: block_list() renders all blocks even on 404.  Refactored the code a bit so ithere is a split between loading and rendering of blocks.  By doing so, we are no longer forced to render _all_ blocks if we know they won't be shown.  There is more room for improvement here, I believe, but this is an incremental improvement.

- Patch #30984 by webchick, keith.smith, kkaefer, Crell et al: provide descriptions for permissions on the permission administration page.

#157652 by beginner, Steven Merrill and killes: block_user() had a global user object and a user parameter colliding

#211742 by theborg, chx: detect and solve the problem when blocks are assigned to invalid regions (happens in theme development)

#202425 by keith.smith: standardize reference to block placement page as 'blocks administration page' to avoid any confusion

#192779 follow up by Lynn: only show enabled themes on block admin page *and* the admin theme (which might not be enabled)

#199890 by gaele, keith.smith: improve block module help text, include description of drag and drop and better help about the throttle functionality; also comes in smaller chunks which makes it easier to translate and update later

#199832 by theborg, Pasqualle: block title defined as NOT NULL, so requires a default empty string even if not set (fixes a theme notice but also a pgsql error)

#192779 by gaele: (usability) only show theme tabs on the blocks page for enabled themes, for consistency with the theme settings page

#200069 by keith.smith: new standard for 'more information' links in module help texts, as the handbook we referred to before was renamed

 - whitespaces at end of lines
 - indentation
 - control structure usage
 - whitespace in empty lines
 - phpdoc comment formatting

- Patch #163246 by keith smith, freso, O Govinda, catch, webchick et al: fixed minor spelling issues and fixed spacing issues.

#80963 by chx with multiple contributors: remove deletion and database lock based block rehash code, replace it with simpler updates

#184867 by deekayen, catch and keith.smith: fix some spelling errors in our source code and messages printed

#183690 by Wim Leers: (developer improvement) abstract path matching to drupal_match_path() from block listing, so this gets reusable when path based matching is required

#180897 by sun and dvessel: fix various XHTML validity issues in Drupal by closing unclosed tags, avoiding empty table containers, and so on

#157752 by quicksketch: extend AHAH functionality to most types of form elements, without writing JavaScript. Also AHAH enable the blocks admin page.

#167284 by Heine and pwolanin: proper field type placeholders in IN() queries, setting a best practice to avoid vulnerabilities

- Patch #168028 by dvessler, merlinofchaos, pwolanin et al: both theme functions and templates may need include files. Flush your caches.

#155282 by Jose A Reyero: apply db_rewrite_sql() to the block listing query to allow for multilingual blocks

  unanimously agreed to rollback the deletion API.  We all support the
  features this patch added, yet not its actual design and implementation.
  After some talk, we decided that it would be better for Drupal -- in the
  long term -- not to go with a solution that isn't 100%. We also recognize
  that in the short term, this patch would have been useful addition. So
  let's figure out how we can implement this properly in D7.

#154064 by pwolanin: get hook_help() up to speed to menu changes, allowing router path based lookups, and also full path argument lookup with a passed argument array

- Patch #149176 by chx, David et al: getting rid of the sequences table, using db_last_insert_id() instead of db_next_id().