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This release not only publishes all database additions that were
contributed in the last half of year, but also introduces several
new improvements in the library itself.
* As always, many new lenses/camera were added to the database
* Support for cross-platform compilation using cross-mingw32
(build instructions in README).
* Some bugs were fixed in the library, related to memory
allocation. Now lensfun should be valgrind-clean.
* Fixed a nasty bug in lfDatabase::FindLenses() that would
always use fuzzy search (even if you would ask for a 100%
match). Your applications may chease to "find" lenses if they
relied on this bug. Just add the LF_SEARCH_LOOSE flag as the
last parameter to return the old behaviour.
* Fixed another bug in search logic that sometimes would mark
unappropiate results with very high scores (esp. when little
search keywords are given). Now search should work much better.
* New TCA correction algorithm: LF_TCA_MODEL_POLY3 ("poly3" in
database). This is almost the algorithm used by Hugin except
the highest-order power (r^4). This should allow users to use
tca_correct to compute TCA parameters.
* Fixed the LF_TCA_MODEL_LINEAR - it used 1/k where it was
expected to use k. This is the 'v' parameter of Hugin TCA model,
and previously users had to invert v to get k; now they can
just use v.
* New lens calibration tutorial, using Hugin.
* Some SSE & SSE2 support from Klaus Post with runtime CPU
features detection.
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