Silence spurious smartmatch warnings
remove use of smartmatch altogether *sniff*

Because 'use experimental' would cause problems with
earlier perls...
changelog entry
move some doc to a pod file
fix documentation
Fixes #2
Merge commit '7b10650a60dcb21ca227d'
v0.1.3

 [BUG FIXES]
 - remove use of smartmatches to silence 5.18's warnings

 [STATISTICS]
 - code churn: 4 files changed, 95 insertions(+), 86 deletions(-)