OptionParser: Fix indent
OptionParser: Add complete_greedily() funcref for a parser object
OptionParser: Add a test for complete_greedily() funcref
OptionParser: add document for complete_greedily() funcref
Merge pull request #208 from aomoriringo/master

Math: Add lcm and gcd
Merge pull request #209 from aomoriringo/master

Math: Fix gcd about 0
Text.Table: Support powerful width feature.
Text.Table: Support powerful joint/border feature.
Text.Table: Add tests.
Text.Table: Update document.
OptionParser: Refactorings

- rename *_completion to complete_*
- unify arguments; use arglead, cmdline and cursorpos
OptionParser: Complete user specified values on greedy completion
Merge pull request #210 from kamichidu/Text.Table

Add rich joint/border features to Text.Table
Web.JSON: Speed tuning

`substitute(json, '\n', '', 'g')` is toooo slow when json is large.
`join(split(json, "\n"), '')` is faster than `substitute(json, '\n', '', 'g')`.
Merge pull request #211 from kamichidu/tuning

Tune Web.JSON for speed.