In past -> present order.
This is probably it as far as changes go for a bit - possibly through the end of the Holidays (barring discovery of any nasty bugs in the next day or so).

v195
- list blocks should show a list name by default
- make the help tool report “scratchUI” or “paint” when clicked on the UI
- hide stage resize handle in player mode
- make separate blocks for show/hide variables and lists
- tweak media item number positions
- changes tip bar JavaScript to support help on blocks (added entry for “move” block as example)
- bug: click and hold on block in scripts area makes it jump to top left
- bug: allow adding reporters to “switch backdrop to _”
- bug: allow numbers in “switch backdrop to _”
- close tips window when the login menu is clicked and move menu to avoid overlap
- bug: edited SVG costume not loading properly (bad offsets)
- bug: exported SVG costume has incorrect width/height
v196
- bug: show/hide list blocks appear twice
- but: grow/shrink too sticky?
- issue: grow/shrink scale too quickly
- bug: click and hold on a costume/sound deletes it
- undo/undelete
- paint editor undo support
- paint editor: eyedropper tool (Shane)
- paint editor: can now fill in bitmaps; repeated clicking in same spot increases tolerance (Shane)
- make grow/shrink tools be sticky only if you repeatedly click on the *same* sprite
- fetch the language list and translation files from server
- enable translation export items
v201
- cloud data security fixes from Sayamindu
- new handling of grow/shrink too sticky-ness (tool deselects if you move off that sprite)
- when sprites are deleted, select previous sprite in the sprite library
- translation fetching work-around for new password protection on jiggler
- change “More” menu to “Edit”
- enable export of translation and help screen lists for internal use (shift-click on Edit)
v205
- bug: when saving project data from JavaScript, backslash sequences are unescaped (HardMath's projectm 10007795)
- bug: projects with missing assets fail to load or behave strangely, so you can't fix them (Natalie's project, 10007584)
- make new sprite appear at end of library
- change “when I am clicked” to “when this sprite clicked”
- bug: broken JSON never terminates (10007104)
- bug: newly created, unshared projects sometimes moved to trash
- save ASAP when new assets added: new remix or copy, import from disk, asset loaded, etc.
- reject sprites from backpack dropped into costumes/backdrops
- accept costumes from backpack dropped on sprite library
- bug: navigating away from editor in browser can lose edited costumes/sounds entirely, not just recent edits
- re-compute md5 when saving backpack
- save feedback: “save under N minutes ago”
- add transition notices for “save as a copy” and “new”
- call ASsetEmbedMode() in appropriate places
- translation: pull language list and translation files from server
- change “More” menu to “Edit”
- when deleting sprite, switch to another sprite (not the stage)
- when drag/drop sprite on stage, select that sprite
- support for logging screenshot of flagged project
- change “when I am clicked” to “when this sprite/stage clicked”
- save feedback: “last saved N minutes ago”;
- quick click on a stack with stamp tool should offset the duplicate slightly
- make remix notice visible a bit longer even when remixing small project
v206

Thanks for the list!

This really helps us developers/testers.