Evolution of aligned_alloc -- refactoring of 'alloc' to include 'pre-deletion' of the, possibly previously allocated, memory. Basically allows for calling alloc multiple times without leaking mem. I think this wasnt implemented previously because there was no clear/explicit api need for it.
Improving hashing in the bignum context, now is essentially an FNV-1a algorithm.
More explicit includes for the boost/stl code used in dataset_1/controller.h
Cleaner, more sensible (and potentially faster) implementation of 'value_from_grid' method in coefficient_metadata_base.h
Regression bug-fix when building with DEBUG_XSLOW. Some code was not properly upgraded with current design evolution and features. Namely message.h sanity-checking code was not using the newly-implemented field_master_type et.al. via custom-defined policy/type-traits typedefs.
Server (netcpu) performance-related hacks.

Better management of visited_places, now back to being computed in the 'on_sync_timeout' call (possibly similar to a much earlier mechanisms, but not quite -- as subsequently-deplyoed unordered_set is still of relevance). Doing it in the 'on_sync_timeout' because the potential for re-processing duplicate complexities (reported from different peers in individual 'on_peer_report's) is not an issue here.

New feature to re-scan for duplicates when grid-resolutions differ between different x-coeffs-@-once complexity levels. Old code would have left some of the duplicate-complexities (i.e. those that produce the same universal coordinates) when different grid-res were used between various x-@-once complexity levels... not a critical bug overall, but rather an optimization improvement...

Given the issues (performance regression) w.r.t. unoredered_set on gcc 4.7.1 am also tentatively trying boost::unoredered_set instead for the management of 'visited_places'.

Some additional diagnostic printouts in debug mode, and refactoring other printouts to be only in the debug builds.
WebNetCPU hacks...

Bug-fix -- ids of jobs graphed were of the model id not the task id.

Look'n'feel refactoring -- task text always shown in the expanded mode, better distinction between tables/tasks rows, etc.

More information regarding not overstepping "reasonably load" policy w.r.t. VCGW parameters given the currently-deployed hardware (i.e. my old-ish box).
Formatting and information-provision related hacks.

Allowing censoc/lexicast.h to have a locale specified by user-code (for matters such as customized formatting of numbers, etc.)

NetCPU server relocated and expanded visited_places debug information printout (now in 'on_sync_timeout' and includes things like collisions info).

Formatting of long numbers in debug output (e.g. current complexity numbers fed to WebNetCPU for the active task description).

WebNetCPU "Please wait" notification (when loading tasks info) is now somewhat more accurate/expanded w.r.t. possible duration for one to wait.