changelog editing pass

Author: myk002

changelog.txt

@@ -93,15 +93,11 @@ Template for new versions:
 - specific changes: ``world.fake_world_info[]`` is now ``world.fake_world_info.language[]``
 - specific changes: ``world.selected_direction`` is now ``world.selected_direction[0]`` (and there are 3 additional entries)
 
-# 51.02-r1
-
 # 50.15-r2
 
 ## Structures
 - fixed incorrect vtable address for ``widget`` superclass on Linux
 
-# 50.15-r1
-
 # 50.14-r2
 
 ## Structures
@@ -115,8 +111,6 @@ Template for new versions:
 # ``widget``: changed ``visibility_flag`` to ``flag`` (matching DF internal name)
 # added new keybindings for 50.14
 
-# 50.13-r5
-
 # 50.13-r4
 
 ## Structures
@@ -133,10 +127,6 @@ Template for new versions:
 - added several bay12 exported entry points to list of known globals
 - canonicalized a wide swath of type names, field names, and structure organization to match DF's internal names and organization. fields that already had useful names were largely left alone, but all ``unk``, ``anon``, and other "placeholder" names have been changed. structures that differed from reality were also corrected (e.g. collections of fields that were actually substructures and vice versa).
 
-# 50.13-r2
-
-# 50.13-r1.1
-
 # 50.13-r1
 
 ## Structures
@@ -149,8 +139,6 @@ Template for new versions:
 - ``unit_action_data_attack`` (``unit_move_attackst``): identify flags
 - ``job_type``: new job class type: "Carving" (for smoothing and detailing)
 
-# 50.12-r2.1
-
 # 50.12-r2
 
 ## Structures
@@ -159,8 +147,6 @@ Template for new versions:
 - ``unit``: identify and define many previously unknown fields, types, and enums
 - ``activity_event``: identify fields and type values
 
-# 50.12-r1
-
 # 50.11-r7
 
 ## Structures
@@ -190,8 +176,6 @@ Template for new versions:
 - ``viewscreen_choose_start_sitest``: fix structure of warning flags -- convert series of bools to a proper bitmask
 - ``feature_init_flags``: more enum values defined
 
-# 50.11-r4
-
 # 50.11-r3
 
 ## Structures
@@ -211,8 +195,6 @@ Template for new versions:
 ## Structures
 - add new global: ``start_dwarf_count``
 
-# 50.10-r1
-
 # 50.09-r4
 
 ## Structures
@@ -244,8 +226,6 @@ Template for new versions:
 - ``abstract_building_libraryst``: initialize unknown variables as DF does
 - ``misc_trait_type``: realign
 
-# 50.08-r3
-
 # 50.08-r2
 
 ## Structures
@@ -305,8 +285,6 @@ Template for new versions:
 ## Structures
 - added missing tiletypes and corrected a few old ones based on a list supplied by Toady
 
-# 50.05-alpha3.1
-
 # 50.05-alpha3
 
 ## Structures