Use loguru

[xiki-tempula]

Switch to use loguru for logging Fix #301

[xiki-tempula]

@orbeckst Do you mind have a check to see if you are happy with the new logger? How it works with other section of your code. I'm working on the doc now, where I plan to add a new miscellaneous section to the top level doc and a second level logging. Then in other places, I will just refer to this section.

[codecov[bot]]

Codecov Report

Merging #303 (3b909bf) into master (1d0a111) will decrease coverage by 0.01%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #303      +/-   ##
==========================================
- Coverage   98.75%   98.75%   -0.01%     
==========================================
  Files          27       27              
  Lines        1773     1762      -11     
  Branches      388      388              
==========================================
- Hits         1751     1740      -11     
  Misses          2        2              
  Partials       20       20              

Impacted Files	Coverage Δ
src/alchemlyb/estimators/mbar_.py	100.00% <ø> (ø)
src/alchemlyb/convergence/convergence.py	100.00% <100.00%> (ø)
src/alchemlyb/parsing/amber.py	99.15% <100.00%> (-0.01%)	:arrow_down:
src/alchemlyb/parsing/namd.py	99.18% <100.00%> (-0.01%)	:arrow_down:
src/alchemlyb/workflows/abfe.py	99.67% <100.00%> (-0.01%)	:arrow_down:
src/alchemlyb/workflows/base.py	100.00% <100.00%> (ø)

[xiki-tempula]

@orbeckst Thanks for the review. I have addressed the changes.