Merge pull request CHLNDDEV#247 from CHLNDDEV/release_version

*Prepare for new version

Update README.md (CHLNDDEV#199)


* update changelog to 4.0.0


Co-authored-by: Keith Roberts <krober@usp.br>

prep for v3.3 (CHLNDDEV#163)

* Update changelog and add citing section. 

Co-authored-by: William Pringle <wpringle@anl.gov>

Multiscale meshing--mesh resolution transitions (CHLNDDEV#119)

* Bug fix to dpoly.m

   * if sum(inside) == 0 then d_l will not exist, but it seems like it sum(inside) is zero then it doesn't use the d_l 
     anyway so can just return then.

* use splitting at initial point generation to ensure mesh resolution transitions between largely disparate nests are sufficiently smooth for good mesh qualities. 


Co-authored-by: Keith Roberts <krober10@nd.edu>

Merge pull request CHLNDDEV#97 from CHLNDDEV/Small_addition

Small changes

Merge pull request CHLNDDEV#62 from CHLNDDEV/reorganization

Reorganization of files.

Merge pull request CHLNDDEV#26 from CHLNDDEV/krober10nd-patch-1

Linking my thesis to references

Update Example_3_ECGC.m

- demonstrating the use of arbitrary  polygons to mesh within (in both outer and inner nests)

Some fixes for the examples

- Now all examples include the makens function and the interp function at the end (except for the NZ example which doesn't include bathy)
- Other various fixes to ensure everything works and plots smoothly and is clean