Change of maintainer and fix C++ issues. (#74)

* Getting rid of dplyr and sp: replacing with collapse, sf and s2 + some optimization

* Small fix.

* Need to add sf and rename count column.

* Using R's numeric() instead of alloc().

* Update NEWS

* Fixing #63. The issue on M1 Mac is due to implicit conversion of a double (factor) to long int here: on M1 Macs this is rounded downwards, thus I needed to add a small number. Took me 6 freaking hours of simultaneous debugging on Mac and Windows to find it...

* Adding return_sf argument: set to FALSE for memory efficient long datat frame (can be converted to S2 and other classes).

* Appeasing R CMD check.

* Comment and change of notation as requested by @r-barnes.

* Update CONTRIBUTING.md to explain C++ workflow

* Using dgprintf as requested by @r-barnes.

* Also using dgprintf here.

* Install instructions for fork.

* Update README.md

* Remove magrittr pipe.

* Need to add dplyr for vignette it seems.

* Fix C++ issues.

* Change of maintainer.

* Spacing.

* Remove duplicate.

* Remove installation notes.

* Fix spacing.

---------

Co-authored-by: Richard Barnes <[email protected]>

Fix 'warning: a function declaration without a prototype'

Updating examples

Bumped version

Use `#include <stdexcept>` where needed

Bump version

Bump version

dggridR v0.1.11 (Release date: 2016-09-18)

===============

Changes:

* Fixes a `long double` output formatting issue that gives bad results when
  code is compiled using MingW on certain Windows systems.

* Adds a debugging capability to the R code to make it easier to get
  diagnostics from users.

dggridR v0.1.10 (Release date: 2016-08-16)

==============

Changes:

* Many conversions from printf and sscanf in hopes of improving oldrel-windows functionality

dggridR v0.1.9 (Release date: 2016-08-14)

==============

Changes:

* Fix bugs preventing the -4- grids from constructing properly (e.g. ISEA4H)