1771
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Ran 15 Jun 2020 10:52PM UTC

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Build # 1771

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web-flow

Commit Message

Merge #1106

1106: Fix exponent superscripting in HTML r=hgrecco a=clarkgwillison

- [ ] Closes # (no issue filed)
- [x] Executed ``black -t py36 . && isort -rc . && flake8`` with no errors
- [x] The change is fully covered by automated unit tests
- [x] Documented in docs/ as appropriate
- [x] Added an entry to the CHANGES file

This PR fixes two issues with exponent rendering of decimal quantities. The first was causing units with exponents that were longer than 1 character not to superscript properly in HTML views, such as used by Jupiter, and the second was causing rendered exponents in the terminal to look less than ideal.

## HTML View
In electronics, noise density is often expressed in units of Volts per sqrt(Hertz), but prior to this change that unit rendered like so:

![image](https://user-images.githubusercontent.com/253574/83940713-0ee6d600-a79b-11ea-8467-0889b46fb311.png)

By adding brackets around the exponent in the format string, we achieve the following:

![image](https://user-images.githubusercontent.com/253574/83941036-f1b30700-a79c-11ea-870e-e457f93c919b.png)

## Terminal Pretty Print
Using the unicode dot operator instead of a plain period (.) makes decimal exponents looks slightly more natural.

Before:
```
nV/Hz⁰.⁵
```
After:
```
nV/Hz⁰⋅⁵
```

Co-authored-by: Clark Willison <clarkgwillison@gmail.com>

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3605 of 4007 relevant lines covered (89.97%)

11.83 hits per line

Jobs

ID	Job ID	Ran	Coverage
1	1771.1 (PKGS="python=3.7 flake8 black isort")	15 Jun 2020 10:52PM UTC	0.0	Travis Job 1771.1
2	1771.2 (PKGS="python=3.7 ipython matplotlib nbsphinx numpy pandas jupyter_client ipykernel python-graphviz graphviz xarray sparse dask[complete] sphinx Pygments==2.3.1 docutils==0.14 alabaster commonmark==0.8.1 recommonmark==0.5.0")	15 Jun 2020 10:54PM UTC	0.0	Travis Job 1771.2
3	1771.3 (PKGS="python=3.6")	15 Jun 2020 10:52PM UTC	75.1	Travis Job 1771.3
4	1771.4 (PKGS="python=3.7")	15 Jun 2020 10:53PM UTC	75.1	Travis Job 1771.4
5	1771.5 (PKGS="python=3.8")	15 Jun 2020 10:52PM UTC	75.43	Travis Job 1771.5
6	1771.6 (PKGS="python=3.6 uncertainties=3.0")	15 Jun 2020 10:55PM UTC	88.27	Travis Job 1771.6
7	1771.7 (PKGS="python=3.7 uncertainties=3.0")	15 Jun 2020 10:55PM UTC	88.27	Travis Job 1771.7
8	1771.8 (PKGS="python=3.6 numpy=1.14 matplotlib")	15 Jun 2020 10:55PM UTC	84.63	Travis Job 1771.8
9	1771.9 (PKGS="python=3.7 numpy=1.14 matplotlib")	15 Jun 2020 10:56PM UTC	84.63	Travis Job 1771.9
10	1771.10 (PKGS="python=3.8 numpy=1.17 matplotlib")	15 Jun 2020 10:57PM UTC	87.42	Travis Job 1771.10
11	1771.11 (PKGS="python=3.6 numpy=1.14 uncertainties=3.0")	15 Jun 2020 10:57PM UTC	85.75	Travis Job 1771.11
12	1771.12 (PKGS="python=3.7 numpy=1.14 uncertainties=3.0")	15 Jun 2020 10:58PM UTC	85.68	Travis Job 1771.12
13	1771.13 (PKGS="python=3.6 numpy uncertainties")	15 Jun 2020 10:58PM UTC	88.27	Travis Job 1771.13
14	1771.14 (PKGS="python=3.7 numpy uncertainties")	15 Jun 2020 10:58PM UTC	88.27	Travis Job 1771.14
15	1771.15 (PKGS="python=3.8 numpy uncertainties")	15 Jun 2020 11:00PM UTC	88.42	Travis Job 1771.15
16	1771.16 (PKGS="python=3.8 numpy uncertainties sparse xarray netCDF4")	15 Jun 2020 11:00PM UTC	88.52	Travis Job 1771.16

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