Add:
    bitshift/crawler/
        (crawler, indexer).py
            -add  a 'time.sleep()' call whenever a thread is blocking on items
            in a Queue, to prevent excessive polling (which hogs system
            resources).

        indexer.py
            -move 'git clone' functionality from the 'GitIndexer' singleton to
            a separate, threaded '_GitCloner'.
            -'crawler.GitHubCrawler' now shares a "clone" queue with
            '_GitCloner', which shares an "index" queue with 'GitIndexer'.
            -both indexing and cloning are time-intensive processes, so this
            improvement should (hypothetically) boost performance.
            -add `GitRepository` class, instances of which are passed around in
            the queues.

Add:
    bitshift/crawler/(__init__, crawler, indexer).py
        -add `logging` module to all `bitshift.crawler` modules, for some basic
        diagnostic output.

Add:
    bitshift/crawler/indexer.py
        -add two `try: except: pass` blocks, one to _decode() and another to
        GitIndexer.run(); bad practice, but GitIndexer has numerous unreliable
        moving parts that can throw too many unforseeable exceptions. Only
        current viable option.
        -add file-extension regex ignore rules (for text, markdown, etc. files)
        to _get_tracked_files().

Add:
    bitshift/crawler/indexer.py
        -add _debug().
        -add content to the module docstring; add documentation to GitIndexer,
        and the functions that were lacking it.
        -add another perl one-liner to supplement the `git clone` subprocess
        call, which terminates it after a set amount of time (should it have
        frozen) -- fixes a major bug that caused the entire indexer to hang.

Add, Fix:
    bitshift/crawler/
        __init__.py
            -add module and crawl() docstrings.
            -add repository_queue size limit.

        crawler.py
            -account for time spent executing an API query in the run() loop
            sleep() interval.

Additions are not tested and not yet documented.

Add:
    crawler.py
        -add threaded GitHubCrawler class, which interacts with a GitIndexer
        via a Queue.

    git_indexer.py
        -add threaded GitIndexer class, which interacts with GitHubCrawler via
        a Queue.
        -rename context-manager ChangeDir class to _ChangeDir, because it's
        essentially "private".

    __init__.py
        -add body to crawl(), which creates instances of GitHubCrawler and
        GitIndexer and starts them.

Add:
    bitshift/crawler/git_indexer.py
        -add some missing docstrings, complete others.

Add:
    bitshift/crawler/git_indexer.py
        -add ChangeDir class, a context-management wrapper for os.chdir().
        -replace unsafe "rm -rf" subprocess call with shutil.rmtree()

Add:
    bitshift/codelet.py
        -add name field to Codelet.

    bitshift/crawler/crawler.py
        -fix previously defunct code (which was committed at a point of
        incompletion) -- incorrect dictionary keys, etc..
        -reformat some function calls' argument alignment to fit PEP standards.

    bitshift/crawler.py
        -add sleep() to ensure that an API query is made at regular intervals
        (determined by the GitHub API limit).

Add:
    bitshift/crawler/(crawler, git_indexer).py
        -move Codelet creation from the crawler to the git_indexer, in
        preparation for making crawling/indexing independent, threaded
        processes.

Mod:
    bitshift/codelet.py
        -modify documentation for the author instance variable.

Add:
    bitshift/crawler/crawler.py
        -add base crawler module
        -add github(), to index Github.
Mod:
    bitshift/crawler/
        -add package subdirectory for the crawler module, and any subsidiary
        modules (eg, git_indexer).

    bitshift/author_files.py > bitshift/crawler/git_indexer.py
        -rename the module to "git_indexer", to better reflect its use.
        -convert from stand-alone script to a module whose functions integrate
        cleanly with the rest of the application.
        -add all necessary, tested functions, with Sphinx documentation.

Add:
    author_files.py
        -add prototype script to output metadata about every file in a Git
        repository: filename, author names, dates of creation and modification.
        -lacking Sphinx documentation.

Add:
    bitshift/codelet.py
        -complete docstrings, add filename to Codelet constructor.

Add:
    bitshift/codelet.py
        -add Codelet class with constructor.

    README.md
        -add SASS stylesheet documentation

Mod:
    bitshift/assets.py
        -convert existing docstrings to the Sphinx auto-doc format.

Conflicts:
	app.py

Add:
	bitshift/assets.py
		-add module that contains functions to be called from inside the
		templates/ Jinja HTML files -- currently contains tag(), which generates
		an HTML asset tag based on a filename.

	bitshift/config.py
		-add Flask configuration module.

	static/(sass/main.sass, css/main.css)
		-create isolated directory for SASS files; compiled CSS files will be
		stored in static/css.

	static/css/_mixins.sass
		-add SASS partial to contain mixins (globally relevant to the project's
		styling).

	templates/layout.html
		-add various metadata.

Add:
	app.py
		-add boilerplate Flask source.

	bitshift/
		-directory for all python source.

	templates/(layout, index).html
		-add global layout template, and placeholder home page.

	static/css/main.sass
		-add placeholder main SASS file.