From snapshot 175:
Fix race condition with Newtonian Gravity (exceptionally rare, has been in there 7 years)
Fix garbage in certain error messages, such as errors when voting
Fix minor resource leaks in Lua
Fix minor memory leak when allocating Lua elements
Fix POLO eating PROT ID#0 no matter where it is
Search signs now drawn in purple instead of blue
Forum thread signs now drawn in red instead of blue
From snapshot 174:
Add command line option "redirect" to redirect output to stdout.txt / stderr.txt
Print libcurl error buffer to stderr on client error (http code >= 600)
From snapshot 173:
More descriptive SSL error messages
From snapshot 171:
Fix "Error loading save" stamps appearing when using tptmp
Fix replace mode not affecting energy particles
Fix replace mode not working with Lua elements
Don't allow enabling both replace mode and specific delete at the same time
Fix pressure / ambient heat being saved as 0 instead of not at all when holding shift
Fix GLAS, TUNG and QRTZ breaking on load when saved at high pressures
Add new sign types: {type}, {ctype}, {life}, {tmp}, {tmp2}
These sign types now use substitution, you can make a sign such as "{type} with ctype {ctype}" and both will be replaced
Convert old {t} / {p} signs to say "Temp: {t}" and "Pressure: {p}"
PIPE with lava now shows in HUD as "PIPE with molten [ctype]"
From snapshot 170:
Fix memory leak in local save browser
Fix saving/loading window position on 2nd monitor
...
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