add some helpful info to the top of the log.

[amoodie]

Add some info to the log file

• pyDeltaRCM version number (added attr self.__pyDeltaRCM_version__ to the model object.
• Python version (sys.version)
• platform info: name, architecture (platform.platform())
• type of model running (self.__class__.__name__)

Here is an example of a new log:

2021-04-19 20:53:50,405 - INFO - Output log file initialized
2021-04-19 20:53:50,405 - INFO - pyDeltaRCM version 1.3.0
2021-04-19 20:53:50,405 - INFO - Python version 3.8.5 (default, Sep  4 2020, 07:30:14) 
[GCC 7.3.0]
2021-04-19 20:53:50,435 - INFO - Platform: Linux-5.8.0-48-generic-x86_64-with-glibc2.10
2021-04-19 20:53:50,435 - INFO - Setting up model configuration
2021-04-19 20:53:50,435 - INFO - Model type is: DeltaModel
2021-04-19 20:53:50,436 - INFO - Configuration variable `out_dir`: deltaRCM_Output
...

closes #189

[codecov[bot]]

Codecov Report

Merging #192 (67f16b9) into develop (20e7a25) will increase coverage by 0.07%. The diff coverage is 100.00%.

@@             Coverage Diff             @@
##           develop     #192      +/-   ##
===========================================
+ Coverage    78.20%   78.28%   +0.07%     
===========================================
  Files           12       12              
  Lines         2473     2482       +9     
===========================================
+ Hits          1934     1943       +9     
  Misses         539      539              

Impacted Files	Coverage Δ
pyDeltaRCM/init_tools.py	97.99% <100.00%> (+0.04%)	:arrow_up:
pyDeltaRCM/model.py	89.81% <100.00%> (+0.03%)	:arrow_up:

---

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[elbeejay]

Any way to not need to load platform to get the info? Need to check if available in sys.

I found the following in sys:

>>> sys.platform
    'linux'

>>> sys.version
    '3.8.2 | packaged by conda-forge | (default, Apr 24 2020, 08:20:52) \n[GCC 7.3.0]'

>>> sys.version_info
    sys.version_info(major=3, minor=8, micro=2, releaselevel='final', serial=0)

[amoodie]

Decided to go with the extra import, since platform provides a nice, information-dense string. E.g., Platform: Linux-5.8.0-48-generic-x86_64-with-glibc2.10.