Log Message:
Update to 1.3.1

Upstream changes:
glue 1.3.1
Features

    glue() now has a + method to combine strings.

Bugfixes and minor changes

    glue_sql() now supports unquoting lists of Id objects.
    glue_sql() now quotes characters with NAs appropriately (#115).
    glue_sql() now quotes Dates appropriately (#98).
    A potential protection error reported by rchk was fixed.

glue 1.3.0
Breaking changes

    The evaluate() function has been removed. Changes elsewhere in glue made the \ 
implementation trivial so it was removed for clarities sake. Previous uses can \ 
be replaced by eval(parse(text = text), envir).

    collapse() has been renamed to glue_collapse() to avoid namespace collisions \ 
with dplyr::collapse().

Features

    compare.glue() was added, to make it easier to use glue objects in \ 
testthat::expect_equal() statements.

    glue_col() and glue_data_col() functions added to display strings with color.

Bugfixes and minor changes

    Glue now throws an informative error message when it cannot interpolate a \ 
function into a string (#114, @haleyjeppson & @ijlyttle).

    Glue now evaluates unnamed arguments lazily with delayedAssign(), so there \ 
is no performance cost if an argument is not used. (#83, @egnha).

    Fixed a bug where names in the assigned expression of an interpolation \ 
variable would conflict with the name of the variable itself (#89, @egnha).

    Do not drop the glue class when subsetting (#66).

    Fix glue() and collapse() always return UTF-8 encoded strings (#81, @dpprdan)