Flask-boost

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* Include templates files in dist.

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* Add ``boost generate model`` command.
* Generate import statement when generating form.

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* Generate test file when generating controller.

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* Dynamic load controllers.
* Add ``boost generate controller`` command.
* Add ``boost generate form`` command.
* Update doc.

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* Update doc.
* Use glob2 instead of formic in livereload support.
* Clean requirements.txt.
* Update some codes to support Python3. (However the package ``Flask-Upload`` does't support Python3)

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* Fix a bug in requirements.txt.