Fix if/else clause correctly (Ref #314)
MARKDOWNBuilder: add test
refactor variable names in tests; ret -> result

varname of result of convert should be `result`, not `ret`.
ignore if catalogfile_path is a directory, not a file
refactoring: Extract Method Builder#target_name
fix tests of HTMLBuidler

use compile_block and compile_inline
ignore if catalogfile_path is a directory, not a file
refactoring: Extract Method Builder#target_name
fix copmile_block; supporting LATEXBuider
Enable to use both config.yml and command option '--mathml'
fix tests of LATEXBuidler

use compile_block and compile_inline
refactor IDGXMLBuilder, MARKDOWNBuilder, TOPBuilder and I18N
remove ol_helper and ul_helper; use compile_block
change order of methods
Builder: argument of inline_* is more ther one
Builder: "\n" in raw string should be LF
null BracketArg should be allowed
Revert "fix # of args"

This reverts commit 7319a1da77b90c06a241a4dd59317a2fc2cbc9de.
remove escaped quotation
fix raw blocks