Fixes in order to support the changes to bit64

[lsilvest]

Fumbled a bit on this one as R 3.4.4 has some S4 method dispatch changes since 3.3.1, but should be good now.

There is a new note during the R CMD check run on Travis saying:

* checking top-level files ... NOTE
File
  LICENSE
is not mentioned in the DESCRIPTION file.

You probably know how to take care of that, and I'm supposing you will be editing DESCRIPTION anyway to alter the package version...

[codecov-io]

Codecov Report

Merging #33 into master will not change coverage.
The diff coverage is 100%.

@@          Coverage Diff          @@
##           master    #33   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files           1      1           
  Lines          88     90    +2     
=====================================
+ Hits           88     90    +2

Impacted Files	Coverage Δ
R/nanotime.R	100% <100%> (ø)	⬆️

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[eddelbuettel]

Awesome, thanks.

Re LICENSE: I think at some GitHub encouraged everybody to add them to the repos to be more plain. The easiest is probably a simple entry in .Rbuildignore. I have some quality time on a train tomorrow and may just take care of it then.

And I presume this squares us with the planned changed for int64 ?

[lsilvest]

Yes, I ran it against a bit64 version which has the proposed changes and it solves the issue. Thanks!

[eddelbuettel]

BTW LICENSE was already in .Rbuildignore so you must have done R CMD check to the source directory, it is preferable to run R CMD build first and to check the tarball.

All looking good so far, will have a second (real) look a bit later.