Configure options reorganization
Make git ignore bench_recover when configured with benchmark enabled
Merge pull request #165

6a59012 Make git ignore bench_recover when configured with benchmark enabled (Pavel Janík)
Merge pull request #160

1ba4a60 Configure options reorganization (Pieter Wuille)
Optimize verification: avoid field inverse

Suggested by Greg Maxwell.
Add explanation about how inversion can be avoided
Merge pull request #123

13278f6 Add explanation about how inversion can be avoided (Pieter Wuille)
ce7eb6f Optimize verification: avoid field inverse (Pieter Wuille)
Remove GMP field implementation
Merge pull request #168

7277fd7 Remove GMP field implementation (Pieter Wuille)
[API BREAK] Use a nonce-generation function instead of a nonce
Implement SHA256 / HMAC-SHA256 / RFC6979.
Use rfc6979 as default nonce generation function