Fix transform_time_series when interval and resolution are equal

[daniel-thom]

Fixes #211

The previous checks for forecast count == 1 and interval == 0 were invalid.

[jd-lara]

The PR looks good, but it seems to have broken serialization.

[codecov[bot]]

Codecov Report

Merging #212 (2170fcd) into master (0789221) will increase coverage by 0.16%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #212      +/-   ##
==========================================
+ Coverage   74.69%   74.85%   +0.16%     
==========================================
  Files          42       42              
  Lines        3027     3019       -8     
==========================================
- Hits         2261     2260       -1     
+ Misses        766      759       -7     

Flag	Coverage Δ
unittests	74.85% <100.00%> (+0.16%)	:arrow_up:

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
src/component.jl	93.56% <ø> (-0.03%)	:arrow_down:
src/utils/utils.jl	60.33% <100.00%> (-0.34%)	:arrow_down:
src/InfrastructureSystems.jl	60.00% <0.00%> (-6.67%)	:arrow_down:
src/internal.jl	74.46% <0.00%> (-2.13%)	:arrow_down:
src/utils/lazy_dict_from_iterator.jl	96.15% <0.00%> (-0.15%)	:arrow_down:
src/utils/print.jl	36.70% <0.00%> (+3.37%)	:arrow_up:
src/common.jl	50.00% <0.00%> (+25.00%)	:arrow_up:

[daniel-thom]

The PR looks good, but it seems to have broken serialization.

I don't understand the failure, but I'm confident that it was unrelated to the changes in this PR. I reran the tests and they passed. After that I made a new commit to get more test coverage.