Merge 0.4.x

[pitdicker]

The rename from LocalResult to MappedLocalTime caused a lot of merge conflicts.

[codecov]

Codecov Report

Attention: Patch coverage is 57.37705% with 52 lines in your changes are missing coverage. Please review.

Project coverage is 94.01%. Comparing base (0fa2a7f) to head (d286f93).

Files	Patch %	Lines
src/offset/local/tz_info/rule.rs	8.33%	22 Missing ⚠️
src/offset/mod.rs	62.85%	13 Missing ⚠️
src/offset/local/tz_info/timezone.rs	16.66%	10 Missing ⚠️
src/format/parsed.rs	33.33%	4 Missing ⚠️
src/datetime/tests.rs	66.66%	2 Missing ⚠️
src/offset/local/unix.rs	85.71%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##            0.5.x    #1516   +/-   ##
=======================================
  Coverage   94.01%   94.01%           
=======================================
  Files          37       37           
  Lines       16814    16830   +16     
=======================================
+ Hits        15807    15823   +16     
  Misses       1007     1007           

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[pitdicker]

@djc Sorry, can't merge without you 😄

[pitdicker]

@djc Can you please approve this PR?