Merge branch 'release/0.7-1' into develop

* release/0.7-1:
  Prepare 0.7-1 release
allow subset.spiketimes with duplicated channels but warn

* will only keep first matching sweep
* add test for this
Prepare 0.7-2
Merge branch 'release/0.7-2' into develop

* release/0.7-2:
  Prepare 0.7-2
Merge branch 'release/0.7-2'

* release/0.7-2:
  Prepare 0.7-2
  allow subset.spiketimes with duplicated channels but warn
typo in NEWS
whitespace tabs -> 2 spaces
Add new mergedwaveinfo attribute in merge.spiketimes

* this can be used to figure out which wave contains
  which sweep
Docs for merge.spiketimes mergedwaveinfo attribute
Rename as.spiketimes to spiketimes to indicate that it is default constructor

* also move documentation for spiketimes class to this function
roxygenise

* also remove redundant man page
Include all examples within package

* i.e. no more JData dependencies
STY Change quoting of + and [.spiketimes function definitions

* mostly because the TextMate syntax highlighter can understand this ...
better docs plot.spiketimes

* also shorten some example lines to avoid CRAN ire
Prepare 0.7-3
Merge branch 'release/0.7-3'

* release/0.7-3:
  Prepare 0.7-3
  better docs plot.spiketimes
  STY Change quoting of + and [.spiketimes function definitions
  Include all examples within package
  roxygenise
  Rename as.spiketimes to spiketimes to indicate that it is default constructor
  Docs for merge.spiketimes mergedwaveinfo attribute
  Add new mergedwaveinfo attribute in merge.spiketimes
  whitespace tabs -> 2 spaces
  typo in NEWS