Strym

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- A few bug fixes and cosmetic changes.
- Freezing the master branch and creating a devel branch for active development.

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- A new class :code:`phasespace` for phasespace analysis

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- class :code:`strymread`
- Modified function to read radar traces.
- Bug fix for Function :code: `frequency`
- New functions:
- :code:`msg_subset`: For deriving a subset of original messages satisfying given criteria. See commit 819f2d6
- :code:`time_subset`: For getting time-slices of original messages satisfying given criteria
- :code:`acc_state`: Get the ACC (Adaptive Cruise Control) state of driving
- :code:`accel_x`: Get the longitudinal acceleration. See commit 819f2d6
- Address issue 4, and issue 5.

- Function :code:`ts_sync` modified to inherit sample from one of the two input dataframes.
- New function :code: `time_index` and :code: `timeslices` for improved analysis of timeseries data

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- class :code:`strymmap`
- Replaced gmplot mapping with bokeh plot for map
- Now saves map with drive route as png file using selenium and chormium webdriver

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- Added a new class :code: `strymmap`
- Added basic funcionality to read and parse CSV file containing GPS data obtained from Grey Panda.
- Save Map HTML file from GPS Data to show drive route

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- Bux fix. Refer to commit 9ef1a95