Fixing requirements loading.
Added tag 0.6.2 for changeset 2e4909b43157
Connect to device when sending command; handle IOError.  Resolves #1.
Better error and exception handling; Resolves #2.
Remove per-release flask version requirement; use ISO datetimes; use local timezone by default.
Added tag 0.7 for changeset 1abb6a0a7bd6