Fix version identifiers

Fixes:

• Beta releases were not being properly ordered due to wrong usage of semver. This release starts using it correctly.
  All beta versions are going to be deprecated.

Support unified diffs

Features:

• Added support unified diffs

Allow to select code without line numbers

Improvements:

• Allow to select code without line numbers

Contributor:

• @lantian

Bug fixes and tests

Fixes:

• Fixes several bugs related to configurations

Tests:

• Coverage of 90%+ achieved, now the parser is much safer and the ui is also stable.

Goals:

• Keep coverage above 90%

Note: I still have no clue on how to do tests without having white space comparison for the htmls

Fix build on webpack

Fixes:

• Fix build on webpack by adding hogan.js dependency

Use hogan.js as templating engine

Change:

• Use hogan.js as a templating engine instead of nunjucks

Fix diff matching for big chunks

Fixes

• Fix diff matching for big chunks

Fix /dev/null paths

Fixes:

• Avoid displaying /dev/null paths for files

Fix filename parsing on filenames with tabs

2.0.0-beta7

Fix repeated variable name in same scope (thanks Codacy)

Fix parsing of special filenames

2.0.0-beta2

Prepare for release 2.0.0-beta2