Prettier show for `Colon`

[torfjelde]

Currently:

julia> @varname(x[:,1])
x[Colon(),1]

On this branch:

julia> @varname(x[:,1])
x[:,1]

Seems like the latter is preferable, and will make a lot of downstream printing much nicer, e.g. chains obtained in Turing.

Only potential issue is that people might have code that access elements in a chain, etc. using Colon() in the string-rep, so maybe this should be a breaking release?

[torfjelde]

I'll make it a breaking release.

[coveralls]

Pull Request Test Coverage Report for Build 1018107869

• 3 of 3 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.6%) to 83.051%

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Totals
Change from base Build 854623890:	0.6%
Covered Lines:	49
Relevant Lines:	59

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💛 - Coveralls

[codecov[bot]]

Codecov Report

Merging #22 (e780a50) into main (34fc3e1) will increase coverage by 0.59%. The diff coverage is 100.00%.

:exclamation: Current head e780a50 differs from pull request most recent head a01fa61. Consider uploading reports for the commit a01fa61 to get more accurate results

@@            Coverage Diff             @@
##             main      #22      +/-   ##
==========================================
+ Coverage   82.45%   83.05%   +0.59%     
==========================================
  Files           1        1              
  Lines          57       59       +2     
==========================================
+ Hits           47       49       +2     
  Misses         10       10              

Impacted Files	Coverage Δ
src/varname.jl	83.05% <100.00%> (+0.59%)	:arrow_up:

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Continue to review full report at Codecov.

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[torfjelde]

Eehh maybe we should require tests to pass before merging here too? The tests are now failing (I forgot to rename some stuff in the tests).

[phipsgabler]

@torfjelde sounds like a good idea. Where can I activate that?