3.0.0alpha0

This is a complete revolution in the dynamic rendering capabilities of conda-build. More information is in the docs PR at conda/conda-docs#414. There will be a blog post soon, perhaps coupled with a screencast.

Enhancements:

• greatly extended Jinja2 templating capabilities #1585
• record environment variables at top of build.sh, similar to what is done with bld.bat in win. #1765

Bug fixes:

• fix symlinks to folders in packaging #1775
• fix detection of patch level when maxlevel=0 #1796
• properly copy permissions when extracting zip files #1855
• Add more important Windows environment variables to the test environment #1859, #1863

Contributors:

• @jjhelmus
• @kalefranz
• @mingwandroid
• @msarahan
• @pkgw
• @stuarteberg
• @ukoethe
• @wulmer