Pip-date

* Added `*.py` extension to all script files for Windows compatibility
(Fixes 12 and 22)
* Fixed 21, pip-search with no arg issue
* Add sys.implementation to pyOSinfo (fixes 13)
* Bump version v1.0.5

* Synchronisation of previous work (2019-02-15) not pushed to repo.

New Release and bug fixes:
* Added __main__ function coding style
* Added __author__ etc.
* Added new search tool: pip-search
* Fixed confused [acm]times as used in Windows-10, WSL
* Some code cleanup to improve flake8 code formatting analysis:
* Removed unused imports
* Removed redundant whitespace not affecting readability
* Fixed wrong date in CHANGES.txt

* Fixed path search mechnaism for full Linux support. Fixed 6
* Fixed pyfileinfo crashing on binary files. Fixed 8
* Fixed correct time order for [acm]time
* Better terminal color-code compatibility check. Fixed 3
* Removed ANSI control code garbage for non-ANSI-compatible
terminals often found on Windows (CMD, PowerShell). Fixed 2
* Implemented a 'uname' check for non-uname supported OS's
* Improved IBM-437 OEM_CHARSET support for block characters. Fixed 5
* Improved usage text to pip-describe. Fixes 7
* Improved package location info: [apt,dev,sys,usr]
* Improved pyOSinfo getsitepackages() info
* Improved pipbyday to also show package location
* Clarified table header and made it dynamic for different OS
* Added usage help text to pip-date

This release fixes all bugs that I could find and track.
But I don't have a Mac so have not been able to test it there.

Affected files:

modified: CHANGES.txt
modified: README.md
modified: __init__.py
modified: pip-date
modified: pip-describe
modified: pipbyday
modified: pyOSinfo
modified: pyfileinfo
modified: setup.py

* Fix for issue 2 (windows)
* Fixed UI PEP typo
* Added pip-describe (requests) - get full descriptions of not installed packages
* Added pyOSinfo - to get os,platform info
* Added pyfileinfo - to get python-based stat info
* General code and README cleanup
* Updated color-highlight scheme