lstrip spaces (but not newlines) from block tags
add lstrip_blocks environment setting, fix lexer
remove debug code
document `lstrip_blocks`
clarify lstrip_blocks option
hash lstrip_blocks in lexer cache
add tests for lstrip_blocks option
Don't match variable or comment blocks, Use {%+ to disable lstrip_blocks behavior manually
Fix lstrip_blocks tests
Apply lstrip_blocks to comments (match trim_blocks behavior)
fix tests since lstrip_blocks strips comments
Document the {%+ manual disable lstrip_blocks feature
Merge remote-tracking branch 'kristi/master'
Merge branch 'master' of github.com:mitsuhiko/jinja2