fix(parser)!: Allow literals to be parsers of partial inputs

[epage]

If you used Partial, you couldn't use "hello" as a tag but had to do
tag("hello") because we needed to constrain the generic parameter.
Now that we've removed it, literals can be used as desired.

The downside is that for FinishIResult, this shifts an error from
compile time to runtime. At least with is_partial_support, the user
is more likely to see it than they would have with the original nom
code.

BREAKING CHANGE: StreamIsPartial no longer takes a const PARTIAL: bool generic parameter. This was replaced with is_partial_support
function.

Fixes #79

[coveralls]

Pull Request Test Coverage Report for Build 4196027490

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

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Details

• 6 of 71 (8.45%) changed or added relevant lines in 7 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.3%) to 52.665%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/bits/mod.rs	1	3	33.33%
src/bytes/mod.rs	0	2	0.0%
src/error.rs	0	5	0.0%
src/character/mod.rs	3	17	17.65%
src/stream/mod.rs	0	17	0.0%
src/number/mod.rs	0	25	0.0%

Totals
Change from base Build 4195751792:	-0.3%
Covered Lines:	1719
Relevant Lines:	3264

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💛 - Coveralls