chunks_new() wrapper

[mhallal1]

closes #35 and #37

1. A simple wrapper that returns a R6 chunks object and does not assign it to the session.
2. Replace chunks$new with chunks_new() in all vignettes and examples.

• in tests, use chunks$new when testing the R6 methods and chunks_new() when testing the wrappers.

3. Change order of calls in chunks_push and chunks_push_chunks so that chunks parameter is first.

[github-actions]

Code Coverage Summary

Filename                Stmts    Miss  Cover    Missing
--------------------  -------  ------  -------  ----------------------------------------------------------------------------------------------------------------------------------------
R/chunk.R                 150       3  98.00%   363-369
R/chunks_pipe.R            28      25  10.71%   16-48
R/chunks.R                406      40  90.15%   334, 424, 430-433, 439, 466-467, 484-491, 500, 506-515, 561, 587, 593-594, 596, 612, 621, 630, 672, 675, 698-703, 1047, 1068, 1122, 1173
R/get_eval_details.R      113     113  0.00%    15-178
R/include_css_js.R          7       7  0.00%    12-19
R/utils.R                  24      19  20.83%   13, 17-38
TOTAL                     728     207  71.57%

Results for commit: 9821671

Minimum allowed coverage is 80%

♻️ This comment has been updated with latest results

[github-actions]

Unit Tests Summary

    1 files      3 suites   2s ⏱️
  46 tests   46 ✔️ 0 💤 0 ❌
303 runs  303 ✔️ 0 💤 0 ❌

Results for commit 8021c09.

♻️ This comment has been updated with latest results.

[nikolas-burkoff]

A few comments but it's looking good

[nikolas-burkoff]

Should we replace chunks$new() throughout codebase (except inside code/docs of the chunks R6 object itself?)

[mhallal1]

done.

[nikolas-burkoff]

If envir is NULL is that ok?

[mhallal1]

Nop removed that.

[nikolas-burkoff]

I think the bottom three of these probably need changing?

Otherwise looks good - I wonder if there are any internal chunks tests which should use chunks$new() - i.e. if we're testing chunks$f() should we actually use chunks$new() to keep everything internal to chunks (but if testing chunks_f() then we should def use chunks_new()

[mhallal1]

I think the bottom three of these probably need changing?

Otherwise looks good - I wonder if there are any internal chunks tests which should use chunks$new() - i.e. if we're testing chunks$f() should we actually use chunks$new() to keep everything internal to chunks (but if testing chunks_f() then we should def use chunks_new()

The first and third are only changed.

[nikolas-burkoff]

Looks good!