Rename ec_tweak_add() to ec_add() override.
Exclude deprecated elliptic_curve_key.cppp from VS builds.
Remove elliptic_curve_key.hpp from bitcoin.hpp.
rename var for readability
Remove deprecated elliptic_curve_key.
purge obsoleted files.
add comments to build_merkle_tree()
tidy up satoshiwords.cpp
performance improvement for deserializer.
Update makefile
Update makefile and VS projects.
Move checksum calculation to checksum.cpp, guard length, comments.
Update README.md (from master).
Catch up with develop.
Add/use constant.
Sort functions, add is_locktime_conflict() function.
Add unpretty() script deserializer.
Add common constant expressions.
Update NuGet dependencies for VS builds.
Change sighash enum to typedef (for use in sx).